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: While attempting to reach his home before the storm, …………….

A. John's bike broke down

B. an accident happened to John

C. his bike broke down

D. John had a serious accident 

Câu 2: Nothing will prevent him……..succeeding. 

A. in

B. at

C. from

D. on

Câu 3: I don't have many friends and I feel lonely. I wish I ………... 

A. have more friends 

B. had more friends

C. would have more friends

D. will have more friends

Câu 4: 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 5: 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 6: Jack has three brothers, all of ………..are married. 

A. whom

B. who

C. whose

D. that