Câu hỏi: You look so tired! You _______out too late last night.

A. must have been

B. had been

C. had to be

D. should have been

Câu 1: No one but the experts was able to realize that the painting was an imitation. It greatly resembled the original.

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

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 wasn’t genuine.

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

Câu 2: Finding a job in this time of economic crisis is becoming ________.

A. more than difficult

B. most and most difficult

C. more and more difficult

D. more difficult than

Câu 3: I'm really sleepy today. I wish I _______ Bob to the airport last night.

A. hadn't had to take

B. didn't have to take

C. didn't take

D. weren't taking

Câu 4: Difficult though the exam was, he still passed it with flying colours.

A. Because the exam was difficult, he passed it with flying colours.

B. Although the exam was difficult, but he still passed it with flying colours.

C. No matter how difficult the exam was, he still passed it with flying colours.

D. The exam was not too difficult, so he could pass it with flying colours.

Câu 5: Claire wanted to know what time ___________.

A. the banks closed

B. the banks would close

C. did the banks close

D. do the banks close

Câu 6: In my free-time, I often help mom with ___________ the house.

A. clean

B. to clean

C. cleans

D. cleaning