Câu hỏi: You should make use___________ the books you have.

A. of

B. by

C. to

D. up

Câu 1: How long have they been working _____________ the company?

A. for

B. at

C. in

D. on

Câu 2: It was very nice__________ him to give me a lift.

A. of

B. by

C. to

D. on

Câu 3: Smoking is harmful _____________ our health.

A. to

B. by

C. against

D. with

Câu 4: She always takes good care _______ her children.

A. for

B. in

C. of

D. with

Câu 5: He wore a hat, which made him look _______________ a spy.

A. like

B. up

C. after

D. back

Câu 6: Our study is very important____________ our future and useful_____________ our country.

A. for/ for

B. to/ to

C. for/ to

D. to/ for