Identify the error in each sentence: (A) if we had (B) known (C) that you were in hospital, we (D) would visit you

Identify the one underlined word or phrase that must be changed in order for the sentence to be correct.

 I'd rather you ........ smoke in here, if you don't mind.

People in ............   Western countries are often surprised to learn that   ...............  Japanese celebrate Christinas.

Every country has its (1) _________ traditions, some of which have existed for centuries. In my opinion, we should do everything possible to preserve them.
Some people think that in today's high-tech world traditional celebrations are too old-fashioned and (2) _________ to our lives. However, (3) _________ such as Carnival, are important, as they bring communities together and make us think about other people and not just computers. 
(4) _________ argument against traditional festivals is that they are expensive to organise. To some extent this is true, particularly when there are firework (5) _________ or parades. On the other hand, it is a small price to pay for brightening up our lives with entertainment and colour. (6) _________, celebrations like the 'Fallas' in my home town of Valencia (7) _________ many tourists and their money.
Finally, although I agree that some traditional customs (8) _________ their original significance, they can provide an opportunity for us to learn about our past. For example, Bonfire Night teaches British children about a particular period of their country's history.
To conclude, traditional celebrations are (9) _________ great pleasure and interest, and they are certainly (10) _________ keeping.
(5)...............

Johnson was arrested when he failed _______ in court.

In water polo, no player except the _________ can hold the ball with both hands.

Michael looked upset and surprised when  ...........   by his mother today.

If a boss wants to have a well-qualified staff, he should have to pay his employees _______. 

............ in astronomy, the discovery of Uranus was by accident.

Choose the correct option:

John’s success relies__________ his determination, talents and enormous efforts.

Why are you so …….. of his work? He's just doing his best. 

However, some scientists argue that the historical evidence shows that over time the Earth heats .........  and cools  ..........  naturally.

You're 18! You ................... to be able to look after yourself by now.

Since moving to another country, some people decide to follow the customs of the new country, while ...............    prefer to keep their own customs.

Mark the letter A, B, C, or D on your answer sheet to indicate the word or phrase that is CLOSEST in meaning to the underlined part in each of the following questions: 

She was a devoted teacher. She spent most of her time teaching and taking care of her students.

Rachel is good at badminton. She__________ every game.

Many Vietnamese people ______ their lives for the revolutionary cause of the nation 

A football match is divided_________ 2 rounds.

 A newborn baby can neither walk nor crawl. A newborn tiger, .............  , can run within minutes of birth.

The__________ positions include: 1 center, 2 wings, 2 drivers, and 1 "point" man.

Identify the error in each sentence: It is estimated that the population of Vietnam will reach 100 million for the next 25 years and will stabilize at 120 million by the middle of this century