Câu hỏi: I didn’t know you were coming, so I didn’t wait for you.

A. If I had known you were coming, I wouldn’t have waited for you.

B. I would have waited for you if I knew you were coming.

C. If I had know you were coming, I would wait for you.

D. Had I known you were coming, I would have waited for you.

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: 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 3: "No, I won't go to work at the weekend," said Sally.

A. Sally apologized for not going to work at the weekend.

B. Sally regretted not going to work at the weekend.

C. Sally promised to go to work at the weekend.

D. Sally refused to go to work at the weekend.

Câu 4: I hardly know the truth about Jean’s success in the institute.

A. I do not know much about Jean’s success in the institute.

B. It is difficult for Jean to be successful in the institute.

C. Jean’s success in the institute was not to be known.

D. Jean hardly become known and successful in the institute.

Câu 5: My mother is very busy with her work at the office. She still takes good care of us.

A. My mother is so busy with her work at the office that she cannot take good care of us.

B. Because my mother is very busy with her work at the office, she takes good care of us.

C. In spite of being very busy with her work at the office, my mother takes good care of us.

D. My mother is too busy with her work at the office to take good care of us.

Câu 6: I whispered as I didn't want anybody to hear our conversation.

A. Since nobody wanted to hear our conversation, I whispered.

B. So as not to hear our conversation, I whispered.

C. Because I whispered, anybody heard our conversation.

D. I lowered my voice in order that our conversation couldn't be heard.