Câu hỏi: I last saw Bob when I was in Ho Chi Minh City.

A. I didn't see Bob since I was in Ho Chi Minh City.

B. I could see Bob if I was in Ho Chi Minh City.

C. I haven't seen Bob since I was in Ho Chi Minh City.

D. When I was in Ho Chi Minh City, I saw Bob.

Câu 1: 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 2: I should have finished my work last night but I was exhausted.

A. Last night I was exhausted but I tried to finish my work.

B. My work was finished last night but I was exhausted.

C. I did finished my work last night thought I was exhausted.

D. I was exhausted so I didn’t finish my work yesterday as planned.

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: He arrived early, which made everyone surprised.

A. Everyone was surprised at his early arrival.

B. He was so surprised that he arrived early.

C. He was so surprised that everyone arrived early.

D. It was so surprising that everyone arrived early.

Câu 5: 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 6: The leader went so fast. No one could keep up with him.

A. If only the leader had gone faster.

B. What a fast leader!

C. If the leader hadn’t gone so fast, we could have kept up with him.

D. I wish the leader could not have kept up with us.