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

A. was invented

B. is invented

C. has been invented

D. invented

Câu 1:  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 2: To my ………., John is very good at Vietnamese.

A. amazing

B. amazed

C. amaze

D. amazement

Câu 3: I was late because I ……… the bus.

A. left

B. lost

C. missed

D. forgot

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

A. to go on

B. going on

C. go on

D. went on

Câu 5: 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 6: ……… I was a child, I used to play football.

A. As soon as

B. While

C. When

D. If