Câu hỏi:  He is proud of his ……….

A. succeed

B. success

C. successful

D. successfully

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: ………. 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: ……… I was a child, I used to play football.

A. As soon as

B. While

C. When

D. If

Câu 4:  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 5:  I’ll phone you ……………….. I come.

A. while

B. until

C. as soon as

D. because

Câu 6: Chewing gum ………… in Sweden in 1993.

A. was invented

B. is invented

C. has been invented

D. invented