Câu hỏi:  I’ll phone you ……………….. I come.

A. while

B. until

C. as soon as

D. because

Câu 1: Tay Bac university ……. in Son la town for two years.

A. was built

B. is built

C. have been built

D. has been built

Câu 2: I don’t think life ……. better in the future.

A. won’t 

B. will be

C. be

D. is

Câu 3:  “The Wall” ….. when all the members were students.

A. founded

B. was founded

C. has been founded

D. have been founded

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

A. was invented

B. is invented

C. has been invented

D. invented

Câu 5: ………. 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 6: She………… while I was cooking.

A. was phoning

B. will phone

C. phones

D. phoned