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

A. a

B. some

C. any

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: Nina was very............... because she got lots of present

A. interesting

B. lovely

C. happy

Câu 5: I don’t know whether to accept the joboffer. It’s .................

A. a difficult decision

B. the difficult decision

C. difficult decision

Câu 6: The teacher ............... us how to do theexperiment when the fire bell rang.

A. showed 

B. shown

C. was showing