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

A. solve

B. to solve

C. solved

D. solving

Câu 1:  “The Wall” ….. when all the members were students.

A. founded

B. was founded

C. has been founded

D. have been founded

Câu 2:  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 3: We’ve decided …………. married in the spring.

A. getting

B. to get

C. get

D. got

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

A. was invented

B. is invented

C. has been invented

D. invented

Câu 5:  If he worked harder, he ………….

A. will be promoted

B. will have been promoted

C. had been promoted

D. would be promoted

Câu 6: Tay Bac university ……. in Son la town for two years.

A. was built

B. is built

C. have been built

D. has been built