Choose the best answer:
He asked the children ............... too much noise.

 

Mark the letter A, B, C, or D on your answer sheet to indicate the undelined part that needs correction in each of the following questions:
Under certain circumstances, the human body must cope with gases at greater-than-normal atmospheric pressure. For example, gas pressures increase rapidly during a drive made with scuba gear because the breathing equipment allows divers to stay underwater longer and dive deeper. The pressure exerted on the human body increases by 1 atmosphere for every 10 meters of depth in seawater, so that at 39 meters in seawater a diver is exposed to pressure of about 4 atmospheres. The pressure of the gases being breathed must equal the external pressure applied to the body,

otherwise breathing is very difficult. Therefore all of the gases in the air breathed by a scuba diver at 40 meter are present at five times their usual pressure. Nitrogen, which composes 80 percent of the air we breathe, usually causes a balmy feeling of well-being at this pressure. At a depth of 5 atmospheres, nitrogen causes symptoms resembling alcohol intoxication, known as nitrogen narcosis. Nitrogen narcosis apparently results from a direct effect on the brain of the large amounts of nitrogen dissolved in the blood. Deep dives are less dangerous if helium is substituted for nitrogen, because under these pressures helium does not exert a similar narcotic effect.
As a scuba diver descends, the pressure of nitrogen on the lungs increases. Nitrogen then diffuses from the lungs to the blood, and from the blood to body tissues. Nitrogen then diffuses from the lungs to the blood, and from the blood to body tissues The reverse occurs when the diver surfaces, the nitrogen pressure in the lungs falls and the nitrogen diffuses from the tissues into the blood, and from the blood into the lungs. If the return to the surface is too rapid, nitrogen in the tissues and blood cannot diffuse out rapidly enough and nitrogen bubbles are formed. They can cause severe pains, particularly around the joints.
Another complication may result if the breath is held during ascent. During ascent from a depth of 10 meters, the volume of air in the lungs will double because the air pressure at the surface is only half of what it was at 10 meters. This change in volume may cause the lungs to distend and even rupture. This condition is called air embolism.
To avoid this event, a diver must ascend slowly, never at a rate exceeding the rise of the exhaled air bubbles, and must exhale during ascent.

It can be inferred from the passage that which of the following presents the greatest danger to a diver?

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We check the schedule ____________ we want to see the time of the game show.

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A group of Tri-City residents and volunteers from BC Housing gathered at a  neglected therapeutic garden on the old Riverview Hospital grounds last weekend to breathe life into a green space. First planted by psychiatric nurse Art Finnie in the 1950s after he was injured on the job, Finnie’s Garden grew into one of the first experiments in horticultural  therapy. As Lauren English, director of land development for Riverview, put it, gardening as therapy was a revolutionary practice. “He understood the value of nature and how therapeutic it was before it became the rage — to find peace and to find solace and to find comfort,” added MLA Selina Robinson, who attended last Saturday’s event.  At that time, Riverview Hospital was the largest psychiatric hospital in British Columbia, with more than 5,000 patients on site. And Finnie’s was more than a garden. Beyond the rows of corn, flowers and a fish pond, residents could lounge in a picnic area or curve bowls across their own bowling green. But while the idea of Finnie’s Garden was to have a place of gathering that residents created themselves, they weren’t the first ones to make themselves at home.  Archeologists, including one on site last weekend, have found evidence Indigenous people occupied the area for thousands of years. Today, the Kwikwetlem First Nation maintains a land claim over the Riverview lands, and in its language, the area is known as Smu’q wa ala," or “Place of the Great Blue Heron”. "They found fire-altered rocks, they found boiling rocks, they found arrowheads, they found tools," said English, under the watchful eye of the group’s archeologist. “It’s not just colonial history, it’s the precontact history that goes back thousands of years.” Today, while many of the former hospital’s buildings lay in disrepair, 184 people still call the hilltop facility home, and one day in the near future, perhaps, they’ll get to use it again on their road to recovery. The event comes in a year when Treefest was cancelled because of a lack of organizers, and while the renewed work at Finnie’s Garden isn’t meant to replace Treefest, it does offer a outlet for green-thumbs without a patch of dirt.  A final community gardening event at Finnie’s Garden will likely take place in October. By removing weeds, invasive plants and adding mulch, the group plans to have the area ready to plant next spring. 
5. According to paragraph 2 and 3, who is the people implied in the line “…they weren’t the first ones to make themselves at home.”?

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The process of communication has so importance at present moment. It has great expansion and is a necessary agent of socialization. The social communication has great power in the human species, from the origin of the history. The media of social communication can be television, radio, cinema, written or audiovisual press and highways of the information. They do, generally, universalization of the culture of the people. They extend the horizons and the limits between countries. They promote new social models, conducts and values. And they promote a dominant ideology. Often, the media of social communication are very far from the reality of the individuals. They, generally, do not perceive the habitual context of the persons. The social media complement and collaborate in the process of socialization of the new generations, from a positive opinion. Advertising and commercial messaging, pose consumerist models, from a negative perspective. The mass media convert a genuine culture into a consumer society. The advertising stimulates the need to consume, desperately. It transforms the persons into consumers of products. The advertising has a great power on the persons and it transports a serious addiction. The family, the educational system and the society, must allow the process of socialization and formation, to all people. They also must give the tools of analysis and the critique. They also must give offers of interesting things. They must promote the respect to the desires and different opinions. They also must promote the capacity of choice. The mass media influence the children and young people. They have models of identification, values, guidelines and policies. Often, they do not coincide with the own reality. They can serve to think. The mass media influence the process of social adjustment  
4. The word “it” in paragraph 3 refers to _______

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Parents in most cases want the best for their children, and to ensure this, they are  pushed to actively engage in their children’s lives, to ensure that they are making the right choices. Some parents, however, go to the extent of wanting to have the upper hand even when it comes to taking major decisions, such as choosing a career.  Local comedian and actor, Michael Sengazi, was obliged by his parents to pursue a career in law, a path he followed when he joined University of Kigali, but deep down he knew this wasn’t his dream career. This is why after graduating he chose to follow his passion —comedy. His parents failed to understand how a qualified lawyer could decide to go for comedy because they didn’t see it as a ‘well-paying job’. He had a challenge of convincing them to bless his journey. “So, I asked them to give me one year to try and see if comedy would work out for me. I worked hard and my parents realised that I could achieve big things, and they gave me the freedom to pursue the career.”  Bienvenue Muragwa, a career consultant at The Southern New Hampshire University based in Rwanda, says that parents are only allowed to guide the child during the career guidance process, but not take the final decision. “Parents are not allowed to choose or take the final decision for their children as the performance of the student is the assessing parameter of the career to be pursued,” he explains.  Shalom Azabe, a graduate in general counselling at Kampala Christian University, says in most African countries, not only Rwanda, children are overly dependent on their parents, yet this shouldn’t be the case. She recommends picking a leaf from westerners who endeavour to learn their children’s interests, something she says aides them in career guidance for the child. “Normally, a child starts to demonstrate a choice in career at 14 years of age. This is when parents need to sit down and make analysis that would help them guide their child in choosing the fitting option to undertake. This is in fact considered as overprotection as parents want to exercise their authority on their kids unwillingly, yet this affects them psychologically, and when the kid later on fails, they encounter a regret of pursuing studies that were not their choice in the first place,” Azabe said.
2. The word “they” in paragraph 1 refers to _____.

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Rome is the capital of Italy. This sprawling modern city has many ancient monuments. Rome’s history goes (1) __________ more than 2,500 years. Because of its age, Rome is often called the Eternal City. Rome’s many art treasures and historic buildings make the city an important center of European culture. In ancient times, Rome was the center of a (2)_________ Roman empire. The empire lasted nearly 500 years, into the ad 400s. Roman armies conquered the lands that are now Italy, Greece, Great Britain, France, and Egypt. The Romans built many roads from Rome to distant parts of their empire. This network of roads led to a saying that “All roads lead to Rome.” The Roman Empire’s influence is still present. (3) ___________ Romans spread their language, Latin, throughout Europe. Latin is the basis for Italian, French, Spanish, and other European languages. The ancient Romans were great builders. Several of their buildings still stand today. They are among Rome’s famous landmarks.The Pantheon is a temple (4)_________ to the many Roman gods of mythology. The Roman Colosseum is a four-story amphitheater. An amphitheater is like a football stadium. The Colosseum is (5)_________ Roman citizens once watched gladiators fight to the death. The Roman Forum was the political center of ancient Rome. The senate building and law courts were there, along with shops and religious buildings

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Most of the roughly 1,400 active volcanoes around the world, including many in the  United States, do not have on-site observatories. Lacking ground-level data, scientists are turning to satellites to keep tabs on volcanoes from space. Now using artificial intelligence, scientists have created a new satellite-based method of detecting warning signs of when a volcano is likely to erupt.  Every time one of the satellites passes over a given volcano, it can capture an InSAR image of the volcano from which ground movement away from or toward the satellite can be calculated.  InSAR can often pick up the ominous expansion of the ground that occurs when magma moves within a volcano’s plumbing, but it is difficult to continuously monitor the huge number of images produced by the latest generation of SAR-equipped satellites. In addition, some volcanoes exhibit long-lasting deformation that poses no immediate threat, and new images must be compared with older ones to determine whether a deformation at a volcano is a warning sign or just business as usual. To solve these issues, the researchers turned to machine learning, a form of artificial intelligence that can glean subtle patterns in vast quantities of data. They developed an algorithm that can rapidly analyze InSAR data, compare current deformation to past activity, and automatically create an alert when a volcano’s unrest may be cause for concern.  To test the algorithm’s viability, the team applied it to real data from the period leading up to the 2018 eruption of Sierra Negra, a volcano in the Galápagos Islands. The algorithm worked, flagging an increase in the ground’s inflation that began about a year before the eruption. Had the method been available at the time, the team writes, it would have accurately alerted researchers that Sierra Negra was likely to erupt.
1. Which best serves as the title for the passage?

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A class began seven years ___________ with a mix of children who are dumb, deaf and mentally retarded.

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If you see someone who’s looking blue, just reach out and offer a kind word, a smile, a hug. Sometimes people just feel (1) ____ they need someone to care. Maybe they’re confused and not sure what’s going on just in the moment, or in a bigger picture such as where their lives are (2) ____. The purpose of our lives is to love, laugh, be happy and to grow together, sharing with one another. If we are all too busy (3) ____ someone who is in emotional need, it can leave the person wondering what’s the real point of everything. By reaching out and smiling, showing compassion, listening, offering a (4) ____ of gentle advice, you remind both yourself and the (5) ____ what the bigger picture is, and bring a little burst of more light and happiness into the world. Enough of those bursts and lights contribute to the tipping point towards a more compassionate and joyful world

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Nowadays Jeans ___________all over the world.

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While family relationships can bring support, joy, and other wonderful benefits into  our lives, these relationships can also bring stress, particularly when there’s unresolved conflict. Because it’s more difficult to let go of conflicted relationships with family than it would be if these relationships were mere friendships, unresolved conflicts with family members can be particularly painful.  We have certain expectations of trust and closeness toward family members, and it can be more than merely disappointing to realize that this may not be possible with all family members. Unresolved family conflicts bring additional stress at family gatherings in particular. Past unresolved conflicts can become the elephant in the room, felt by everyone, but not directly addressed in the situation. This can be stressful for everyone before and during the family gatherings, sometimes leaving a lasting sense of stress afterward as well. Without a heartfelt discussion, an apology or another form of resolution, the trust on both sides is compromised, and may not know what to expect from this person in the future. For example, that one time your mother-in-law criticized your cooking may come up in your mind every time she comes for a visit, and others may sense your tension. This leads many people to assume the worst when they interpret each other’s behavior in the present and future interactions rather than giving the benefit of the doubt as most of us do with people we trust. Also, references or reminders of past conflicts can sting and create new pain.  Once a conflict has gone on a while, even if both parties move on and remain polite, the feelings of pain and mistrust are usually lingering under the surface, and are difficult to resolve: bringing up old hurts in an effort to resolve them can often backfire, as the other party may feel attacked; avoiding the issue altogether but holding onto resentment can poison feelings in the present.  So what do you do at a family gathering when there’s someone there with whom you’ve had an unresolved conflict? Just be polite. Contrary to how many people feel, a family gathering is not the time to rehash old conflicts, as such conversations often get messy before they get resolved — if they get resolved. Again, be polite, redirect conversations that get into areas that may cause conflict, and try to avoid the person as much as you politely can. 
8. Which of the following can be inferred from the passage?

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During droughts water is scarce but is it possible to make it rain to provide water. Experiments in cloud seeding suggest that it may be possible to artificially create rainfall. Rainfall occurs when supercooled droplets of water – those that are still liquid but are at a temperature below the usual freezing point of zero centigrade – form ice crystals. Now too heavy to remain suspended in the air, these then fall, often melting on their way down to form rain. Even in dry areas the air usually contains some water. This can be made to come together and form ice crystals by seeding the atmosphere with chemicals such as silver iodide or dry ice. They work to promote rainfall by inducing nucleation – what little water is in the air condenses around the newly introduced particles and crystallises to form ice. The ‘seeds’ can be delivered by plane or simply by spraying from the ground. But does it work? It’s hard to tell for sure. As is often the case with weather and climate, it’s impossible to carry out a controlled experiment – so, in areas of increased precipitation, we can’t know whether it would still have rained even if the clouds hadn’t been seeded. Success has been claimed for trials in Australia, France, Spain and the US. In the United Arab Emirates, the technique is credited with the creation of 52 storms in the Abu Dhabi desert, while China boasts of having used the technology in reverse to keep the Beijing Olympic Games of 2008 dry. Recent research, however, suggests that it’s not as effective as was previously believed  
2. According to paragraph 2, what is the condition for crystallisation?

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The print media includes newspapers, magazines, brochures, newsletters, books and even leaflets and pamphlets. Visual media like photography can also be mentioned under this sub-head, since photography is an important mass media, which communicates via visual representations. Although it is said that the electronic or new media have replaced the print media, there exists a majority of audiences who prefer the print media for various communication purposes. Public speaking and event organizing can also be considered as a form of mass media. For many people, it is impossible to imagine a life without their television sets, be it the daily news dose or even the soap operas. This mass media includes television and radio. This category also included electronic media like movies, CDs and DVDs as well as the new hottest electronic gadgets.  With the advent of new technologies like Internet, we are now enjoying the benefits of high technology mass media, which is not only faster than the old-school mass media, but also has a widespread range. Mobile phones, computers and Internet are often referred to as the new-age media. Internet has opened up several new opportunities for mass communication which include email, websites, blogging, Internet television and many other mass media which are booming today. Mass media was developed as a means of social responsibility at the beginning. However, in the course of time, they have attained the status of an industry. Besides the social and industrial nature of mass media, the following common points may also be mentioned. Specifically, it is highly impersonal, because the masses are not identifiable based on perfectly defined audio, visual or written messages. In addition, it is never likely to reach 100 percent of the target nor to have more than 10 percent effectiveness in most of the cases. Contents are generally based on the broad social issues and aspiration of the target audience which may be designed to achieve some specific goals; and all in all, modern mass media draw heavily on technology  
2. Print media may have to compete with _______________

Read the passage carefully and choose the correct answer.

Movements and gestures by the hands, arms, legs, and other parts' of the body and face are the most pervasive types of nonverbal messages and the most difficult to control. 'It is estimated that there are over 200.000 physical signs capable of stimulating meaning in another person. For example, there are 23 distinct eyebrow movements, each capable of stimulating a different meaning.

Humans express attitudes toward themselves and vividly through body movements and postures. Body movements express true messages about feelings that cannot be masked. Because such avenues of communication are visual, they travel much farther than spoken words and are unaffected by the presence of noise that interrupt, or cancels out speech.

People communicate by the way they walk, stand, and sit. We tend to be more relaxed with friends or when addressing those of lower status. Body orientation also indicates status or liking of the other individual. More direct orientation is related to a more positive attitude.

Body movements and postures alone have no exact meaning, but they can greatly support or reject the spoken word. If these two means of communication are dichotomized and contradict each other, some result will be a disordered image and most often the nonverbal will dominate.

Body communication is ________.

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She walked home by herself, _______ she knew that it was dangerous.

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Air pollution is the most prominent and dangerous form of pollution. It occurs dues to many reasons. Excessive burning of fuel which is a necessity of our daily lives for cooking, driving and other industrial activities releases a huge amount of chemical substances in the air every day; as a result, these pollute the air. Smoke from chimneys, factories, vehicles or burning of wood basically occurs due to coal burning. This releases sulphur dioxide into the air making it toxic. The effects of air pollution are evident too. Release of sulphur dioxide and hazardous gases into the air causes global warming and acid rain which in turn have increased temperatures, erratic rains and droughts worldwide making it tough for animals to survive. We breathe in every polluted particle from the air, the result is an increase in asthma and cancer in the lungs. Another effect of air pollution is ozone layer depletion. Ozone layer is the thin shield high up in the sky that prevents ultra violet rays from reaching the Earth. As a result of human activities, chemicals, such as chlorofluorocarbons (CFCs) which play a key role, were released into the atmosphere which contributed to the destruction of ozone layer. Water pollution has taken toll of all the surviving species of the earth. Almost 60% of the species live in water bodies. It occurs due to several factors; the industrial wastes dumped into the rivers and other water bodies cause an imbalance in the water leading to its severe contamination and death of aquatic species. If you suspect that nearby water sources have been contaminated by a corporation then it might be a good idea to hire an expert to see you options. Moreover, spraying insecticides, pesticides like DDT on plants also pollutes the ground water system and oil spills in the oceans have caused irreparable damage to the water bodies. Eutrophication is another big source; it occurs due to daily activities like washing clothes or utensils near lakes, ponds or rivers; this forces detergents to go into water which blocks sunlight from penetrating, thus reducing oxygen and making it inhabitable. Water pollution not only harms the aquatic beings but it also contaminates the entire food chain by severely affecting humans dependents on these. Waterborne disease like cholera, diarrhea have also increased in all places. Another type of pollution common in the countryside is soil pollution. Soil pollution occurs due to the incorporation of unwanted chemicals in the soil due to human activities. Insecticides and pesticides absorb the nitrogen compounds in the soil making it unfit for plants to derive nutrition. Release of industrial waste, mining and deforestation also damages the soil.

8. What is the result of using chemicals in farming?

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Leonardo da Vinci was born on April 15, 1452, in the small Tuscan town of Vinci,  near Florence. Leonardo was the son of a wealthy Florentine public official and a peasant woman. In the mid- 1460s, the family settled in Florence, where Leonardo was given the best education that Florence could offer. He rapidly advanced socially and intellectually. He was handsome, persuasive in conversation and a fine musician and improviser. About in 1466, he apprenticed as a studio boy to Andrea Del Verrocchio. In Verrocchio’s workshop, Leonardo was introduced to many activities, from the painting of altarpieces and panel pictures to the creation of large sculptural projects. In 1472, he was entered in the painter’s guild of Florence, and in 1476, he was still mentioned as Verrocchio’s assistant. In Verrocchio’s Baptism of Christ, the kneeling angel at the left of the painting is by Leonardo.  In 1478, Leonardo became an independent master. His first commission, to paint an altarpiece for the chapel of the Palazzo Vecchino, the Florentine town hall, was never executed. His first large painting, The Adoration of the Magi, left unfinished, was ordered in 1481 for the Monastery of San Donato a Scopeto, Florence. Other works ascribed to his youth are the so-called Benois Madonna, the portrait Ginerva de’ Benci, and the unfinished Saint Jerome.  In 1482, Leonardo’s career moved into high gear when he entered the service of the duke of Milan, Ludovico Sforza, having written the duke an astonishing letter in which he stated that he could build portable bridges; that he knew the techniques of constructing bombardments and of making cannons; that he could build ships as well as armored vehicles, catapults, and other war machines; and that he could execute sculpture in marble, bronze, and clay. He served as a principal engineer in the duke’s numerous military enterprises and was so active also as an architect. In addition, he assisted the Italian mathematician Luca Pacioli in the celebrated work Divina Proportione.  Evidence indicates that Leonardo had apprentices and pupils in Milan, for whom he probably wrote the various texts later compiled as Treatise on Painting. The most important of his own paintings during the early Milan period was The Virgin of the Rocks, two versions of which exist; he worked on the compositions for a long time, as was his custom, seemingly unwilling to finish what he had begun.  From 1495 to 1496, Leonardo labored on his masterpiece, The Last Super, a mural in the refectory of the Monastery of Santa Maria Delle Grazie, Milan. Unfortunately, his experimental use of oil on dry plaster was technically unsound, and by 1500 its deterioration had begun. Since 1726 attempts have been made, unsuccessfully, to restore it; a concerted restoration and conservation program, making use of the latest technology, was begun in 1977 and is reversing some of the damage. Although much of the original surface is gone, the majesty of the composition and the penetrating characterization of the figures give a fleeting vision of its vanished splendor.  During his long stay in Milan, Leonardo also produced other paintings and drawings, most of which have been lost theater designs, architectural drawings, and models for the dome of Milan Cathedral. His largest commission was for a colossal bronze monument to Francesco Sforza, father of Ludovico, in the courtyard of Castello Sforzesco. In December 1499, however, the Sforza family was driven from Milan by French forces; Leonardo left the statue unfinished and he returned to Florence in 1500.
1. The pronoun “he” in paragraph 3 refers to __________

Mark the letter A, B, C, or D on your answer sheet to indicate the undelined part that needs correction in each of the following questions:
Ever since humans have inhabited the earth, they have made use of various forms of communication. Generally, this expression of thoughts and feelings has been in the form of oral speech. When there is a language barrier, communication is accomplished through sign language in which motions stand for letters, words, and ideas. Tourists, the deaf, and the mute have had to resort to this form of expression. Many of these symbols of whole words are very picturesque and exact and can be used internationally, spelling, however, cannot.
Body language transmits ideas or thoughts by certain actions, either intentionally or unintentionally. A wink can be a way of flirting or indicating that the party is only joking. A nod signifies approval, while shaking the head indicates a negative reaction.
Other forms of nonlinguistic language can be found in Braille (a system of raised dots read with the fingertips), signal flags, Morse code, and smoke signals. Road maps and picture signs also guide, warm, and instruct people. While verbalization is most common form of language, other systems and techniques also express human thoughts and feelings.

Which form other than oral speech would be the most commonly used among blind people?

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.

   As viewed from space, Earth’s distinguishing characteristics are its blue waters and white clouds. Enveloped by an ocean of air consisting of 78% nitrogen and 21% oxygen, the planet is the only one in our solar system known to harbor life. Circling the Sun at an average distance of 149 million kilometers (93 million miles), Earth is the third planet from the Sun and the fifth largest planet in the solar system.

   Our planet’s rapid spin and molten nickel-iron core give rise to an extensive magnetic field which, coupled the atmosphere, shields us from nearly all of the harmful radiation coming from the Sun and other stars. Earth’s atmosphere protects us from meteors as well, most of which burn up in the Earth’s atmosphere before they can strike the surface. The planet active geological processes have left no evidence of the ancient pelting it almost certainly received soon after it formed about 4.6 billion years ago. The Earth has a single natural satellite – the moon.

Which of the following helps to create the Earth’s magnetic fields?

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The British are particular about timings and being late is frowned upon, but being on  time is a complicated matter because in some situations, being a few minutes early on others means being exactly on time and in some instances, it is completely acceptable to arrive 10 minutes to a few hours later than the stated time. This can be a minefield for someone who is new to the UK, so here are some basics rules that will help you get your timings right whatever the situation.  In formal meetings, such as job interviews, you should arrive at least five minutes before your meeting. This will give you time to compose yourself before your big meeting. In the UK, arriving late for a formal meeting is seen as unprofessional and will reflect badly on you. If you are running late, ring your host to let them know you will be late. On arrival, apologize sincerely and offer a reason for your lateness, such as you got lost or the train was delayed. It will help you redeem yourself. However, if you are late because you set off later than you should have, it’s wise to keep that to yourself! With appointments such as visits to the doctor or dentist, the time you are given for your appointment isn’t necessarily the time you will be seen. It is not uncommon you may have to wait between 15-30 minutes before you are seen by a doctor and that can be much longer if it is a hospital appointment. Nevertheless, you should arrive at least five minutes before your appointment and it is recommended you take a drink and something to read.  When you start a new job, you are given your typical working hours. For example, if you are expected to start at 9am, it is not acceptable to arrive after this time. Most employers make an exception if you are late once in a while. If you have an appointment, you need to seek permission from your employer to arrive later on that day. Being late consistently will land you in trouble and you can be sacked from your job if after three warnings you are still late.  There is an unsaid rule that you can be a few minutes late for a lecture or seminar once in a while. When you are late, you should enter quietly and find a seat at the back of the room. At the end of lecture or seminar, you should offer your apology to the lecturer. If you have been invited to a dinner party, you should arrive exactly on time as the host will have planned when they will serve the food. You will find that your host will serve their guests a pre-dinner drink, so that gives you a bit of wiggle room, but if you are running later than 10 minutes, you should ring your host and let them know how late you might be. That way they can decide whether to go ahead and serve the other guests. When you arrive you should offer the host and the other guests your apology for being late. 
4. Which of the appointments are often later than expected time?