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

A. was invented

B. is invented

C. has been invented

D. invented

Câu 1:  If he worked harder, he ………….

A. will be promoted

B. will have been promoted

C. had been promoted

D. would be promoted

Câu 2: ………. more about her, you would change your opinion.

A. If you know

B. If you did know

C. If you knew

D. If did you know

Câu 3: All students at Tay Bac university ……… uniforms on Monday.

A. are asked to wear

B. ask to wear

C. asked to wear

D. to asked wearing

Câu 4:  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 5: The film seemed …….... forever, but at last it was over.

A. to go on

B. going on

C. go on

D. went on

Câu 6: If you want to learn English well you have to ………. hard working.

A. being

B. been

C. be

D. for being