Câu hỏi: We spent about one-third of our lives sleeping. We know relatively little about sleep.

A. We know relatively little about sleep, as a result, we spend about one-third of our lives sleeping.

B. We shall know more about sleep if we spend more than one-third of our lives sleeping.

C. We spend about one-third of our lives sleeping so that we know relatively little about sleep.

D. Despite spending about one-third of our lives sleeping, we know relatively little about sleep.

Câu 1: Unless we protect the environment, our life will be badly affected.

A. If our life is badly affected, we will protect the environment.

B. If we protect the environment, our life will be badly affected.

C. If we don’t protect the environment, our life won’t be badly affected.

D. If we don’t protect the environment, our life will be badly affected.

Câu 2: The new restaurant looks good. However, it seems to have few customers.

A. In order to get more business, the new restaurant should improve its appearance.

B. If it had a few more customers, the new restaurant would look better.

C. The new restaurant would have more customers if it looked better.

D. In spite of its appearance, the new restaurant does not appear to attract much business.

Câu 3: The president offered his congratulations to the players when they won the cup.

A. The president congratulated the players on their winning the match.

B. When they won the cup, the players had been offered some congratulations from the president.

C. The president would offered the players congratulations if they won the match.

D. The president congratulated that the players had won the cup.

Câu 4: We survived that accident because we were wearing our seat belts.

A. If we weren't wearing our seat belts, we couldn't have survived that accident.

B. But for our seat belts, we would have survived that accident.

C. Had we not been wearing our seat belts, we wouldn't have survived that accident.

D. Without our seat belts, we could have survived that accident.

Câu 5: No one but the experts was able to realize that the painting was an imitation. It greatly resembled the original.

A. It was hard for ordinary people to judge between the fake painting and the real one, but not for the experts.

B. It was almost impossible for amateurs to realize that the painting was not authentic, though the experts could judge it quite easily.

C. The painting looked so much like the authentic one that only the experts could tell it wan’t genuine.

D. It was obvious that only a person with great talent could fake a painting so successfully.

Câu 6: Tim graduated with a good degree. He joined the ranks of the unemployed.

A. Tim joined the ranks of the unemployed because he graduated with a good degree.

B. If Tim graduated with a good degree, he would join the ranks of the unemployed.

C. Though Tim graduated with a good degree, he joined the ranks of the unemployed.

D. That Tim graduated with a good degree helped him join the ranks of the unemployed.