Câu hỏi: She................ well at school but that changed when she became friends with a different group of girls.

A. did

B. had done

C. had been doing

Câu 1: They.......................personal computers when my father was a student.

A. hadn’t

B. didn’t havecorrect

C. weren’t having

Câu 2: When I arrived the lecture .............. so I didn’t find it easy to follow.

A. started

B. had started

C. had been starting

Câu 3: My sister.................... economics andpolitics when she goes to university.

A. is going to study 

B. studies 

C. will study

Câu 4: She ................ well at school but thatchanged when she became friends witha different group of girls.

A. did

B. had done

C. had been doing

Câu 5: There aren’t ...............places left onthe course so you’d better apply soon.

A. much

B. many

C. lots of 

Câu 6: When I arrived the lecture................ soI didn’t find it easy to follow.

A. started

B. had startedcorrect

C. had been starting