Câu hỏi: An electrical fault could have caused the fire.

A. An electrical fault could have been caused by the fire.

B. An electrical fault could have caused the fire.

C. The fire could have caused an electrical fault.

D. The fire could have been caused by a electrical fault.

Câu 1: My book is not as expensive as yours.

A. Your book is cheaper than mine.

B. Your book is more expensive than me.

C. My book is as cheap as yours.

D. My book is cheaper than yours.

Câu 2: He didn't know how to swim until he was 30.

A. It was not until he was 30 that he knew how to swim.

B. He knew how to swim after his 30s.

C. It took him 30 years to know how to swim.

D. He still didn't know how to swim until his 30s.

Câu 3: He doesn’t study hard, so he can fail the exam.

A. If he studies hard, he won’t fail the exam.

B. If he didn’t study hard, he wouldn’t fail the exam.

C. If he studied hard, he wouldn’t fail the exam.

D. If he hadn’t studied hard, he wouldn’t have failed the exam.

Câu 4: This is the first time I have lived in such a friendly neighborhood.

A. I have lived in such a friendly neighborhood before.

B. I haven’t lived in such a friendly neighborhood before.

C. I had lived in such a friendly neighborhood before.

D. I hadn’t lived in such a friendly neighborhood before.

Câu 5: If I won a big prize in a lottery, I'd give up my job.

A. Although I won the lottery, I gave up my job.

B. Were I to win the lottery, I gave up my job.

C. Unless I won the lottery, I gave up my job.

D. Had I won the lottery, I gave up my job.

Câu 6: They are going to hold next year's congress in San Francisco.

A. Congress is going to be held next year in San Francisco.

B. Congress in San Francisco is going to be held next year.

C. Next year's congress is going to be held by them held next year.

D. Next year's congress is going to be held in San Francisco.