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Synthetic detergents release phosphates into the water, that can cause pollution problems

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A committee has been __________ to organize social events for the students

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_______ he travelled for business for many years, he never got used to the feeling of jetlag

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The scientists are working on a drug capable of arresting the spread of cancerous cells

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In order to receive a refund for faulty products, you have to turn in an original receipt and a ------- complaint form

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His devoted fans follow him _______

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The building looked as though it was falling __________, because of the strange angles of the walls

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Don't let the evil spirits ______________ the peace and placidity of angels.

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“ Oh, I'll ......... that informant before he speaks to the police again, don't worry”

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The system that lets us take in oxygen and release carbon dioxide is called ................... system

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People talk about the generation gap as a kind of division between young people and their parents. It is something which is generally a problem when children enter their teenage years, and results (43) complaints on both side. Parents, for example, can often be heard to say that young people are (44) ______ and disobedient and in addition tend to be irresponsible when spending because they don’t appreciate the (45) ______ of money. Adolescents, on the other hand, complain that their parents don’t understand them. What has gone wrong? One explanation lies in (46) ______society has changed. In the past, children would typically continue the way of life of their parents. In today’s world, parents are very (47) ______ for their children because they want them to achieve more than they did. The problem is that the children often don’t agree with their parents’ plans. Teenagers also reach maturity at an earlier age than they used to and want their independence sooner. The resulting conflict is painful to both sides

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He looks for any excuse he can to blow off his _____ to do housework

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Clipper ships were the swiftest sailing ships that …………………. to sea and the most beautiful.

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I opened my mouth to apologize, but the words wouldn't ...........

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Hai often ………………… his face at 6.15.

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We don’t let employees _________ the office telephone for personal calls

Lan: Let's go to the movies this evening.

Ba : Yes ................

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Mr. Brown ________ English.

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After a busy day of work and play, the body needs to rest. Sleep is necessary for good health. During this time, the body recovers from the (26) ______ of the previous day. The rest that you get while sleeping enables your body to prepare itself for the next day. There are four levels of sleep, each being a little (27) ______ than the one before. As you sleep, your muscles relax little by little. Your heart beats more slowly, and your brain slows down. After you (28) _____ the fourth level, your body shifts back and forth from one level of sleep to the other. Although your mind slows down, you will dream from time to time. Scientists who study sleep state that when dreaming (29) ______ , your eyeballs begin to move more quickly. This stage of sleep is called REM, which stands for Rapid Eye Movement. If you have trouble falling asleep, some people recommend breathing very slowly and deeply. Other people believe that drinking warm milk will make you (30) ______. There is also an old suggestion that counting sheep will put you to sleep!

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Teachers are in the business of molding our youth into the citizens that will eventually run this country.

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How can a person offend people just because they cross their legs? In Thailand, it is rude for a person to show other people the bottom of their feet. This is considered unclean, and Thais can (33) _____ serious offense at it. Another thing people do in the West is to touch people on the head especially children. It is very normal to see an old woman walking up to a young boy and (34) _____ his hair tenderly while saying what a handsome young man he is. In Thailand, touching a person’s head is strictly taboo because that is the (35) _____ part of the body, and it is where the (36) _____ is thought to reside in a person. Although very close family members might touch a child on the head, even this is considered rude after a child grows up. In the Middle East and some parts of Asia, the left hand is used to wash oneself after using a toilet. (37) _____, the left hand can never offered to another person or used to eat with. Food must always be passed with the right hand, and it is considered polite to always use the right hand for social interactions