Câu hỏi: The chief of police………work is very important takes care of the public safety. 

A. who

B. which

C. whose

D. whom

Câu 1: There was a short silence and then footsteps were heard ………from the direction of the library. 

A. come

B. to come

C. came 

D. be coming

Câu 2: I hear that your examinations are next week. You…….very hard at the moment. 

A. study

B. are being studied 

C. must study

D. must be studying

Câu 3: It's getting cold. You'd better not…….without a coat.

A. go out 

B. to go out

C. going out 

D. gone out

Câu 4: The students were all………….by the lion's roar. 

A. frighented

B. destroyed

C. bitten

D. collapsed

Câu 5: He shouted at her. If he had known the whole story, he………so angry

A. has not been

B. would not have been

C. would not be

D. wasn't

Câu 6: Nothing will prevent him……..succeeding. 

A. in

B. at

C. from

D. on