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

A. was invented

B. is invented

C. has been invented

D. invented

Câu 1:  He is proud of his ……….

A. succeed

B. success

C. successful

D. successfully

Câu 2: ……… I was a child, I used to play football.

A. As soon as

B. While

C. When

D. If

Câu 3: ………. 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 4: To my ………., John is very good at Vietnamese.

A. amazing

B. amazed

C. amaze

D. amazement

Câu 5:  “The Wall” ….. when all the members were students.

A. founded

B. was founded

C. has been founded

D. have been founded

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