Câu hỏi: I don’t know whether to accept the joboffer. It’s .................

A. a difficult decision

B. the difficult decision

C. difficult decision

Câu 1: The manager interviewed ........... candidates in turn.

A. each of the

B. each

C. every

Câu 2: ............. the experiment three timesnow with different results each time!

A. We’ve done

B. We did

C. We’ve been doing

Câu 3: The teacher..................... us how to do the experiment when the fire bell rang.

A. showed

B. shown

C. was showing

Câu 4: You can base your geographyassignment on ................ country – itdoesn’t matter which.

A. a

B. some

C. any

Câu 5: I ........... want to be a practisingdoctor but now I’m more interested in research.

A. was used to 

B. used to 

C. would

Câu 6: They ................. personal computerswhen my father was a student.

A. hadn’t

B. didn’t have

C. weren’t having