Câu hỏi: She………… while I was cooking.

A. was phoning

B. will phone

C. phones

D. phoned

Câu 1:  If we ……... have computer, our lives ………. boring.

A. don’t/ will be

B. won’t have/ are

C. didn’t/ would

D. wouldn’t/ were

Câu 2:  “The Wall” ….. when all the members were students.

A. founded

B. was founded

C. has been founded

D. have been founded

Câu 3:  If he worked harder, he ………….

A. will be promoted

B. will have been promoted

C. had been promoted

D. would be promoted

Câu 4: Chewing gum ………… in Sweden in 1993.

A. was invented

B. is invented

C. has been invented

D. invented

Câu 5:  I ……… a taxi so I came on the bus.

A. couldn’t find

B. don’t find

C. haven’t found

D. I have found

Câu 6:  They found it is impossible ……… their problems.

A. solve

B. to solve

C. solved

D. solving