Câu hỏi: I enjoy reading the article that you told me about it yesterday.

A. reading

B. that

C. told

D. it

Câu 1: Little have people done to alleviate the sea pollution caused by the factories in central Vietnam, haven’t they?

A. have people done

B. caused

C. in central

D. haven’t they

Câu 2: Unlike the old one, this new copier can perform their functions in half the time.

A. unlike

B. can perform

C. their functions

D. in half the time

Câu 3: An ambitious person is committed to improve his or her status at work.

A. is

B. improve

C. status

D. at

Câu 4: By measuring the color of a star, astronomers can tell how hot is it.

A. measuring

B. the

C. how

D. is it

Câu 5: Passengers are required to arrive to the gate fifteen minutes before departure time.

A. are required

B. to arrive to

C. before

D. departure time

Câu 6: I clearly remember to tell you about this before.

A. clearly

B. remember

C. to tell 

D. about