Câu hỏi: We congratulate you ___________ your successful flight.

A. on

B. about

C. by

D. with

Câu 1: Do you believe _______ ghosts?

A. no preposition

B. in

C. on

D. at

Câu 2: Our study is very important____________ our future and useful_____________ our country.

A. for/ for

B. to/ to

C. for/ to

D. to/ for

Câu 3: We might need more food, depending ____ how many people turn up.

A. for

B. on

C. at

D. with

Câu 4: It was very nice__________ him to give me a lift.

A. of

B. by

C. to

D. on

Câu 5: Ken prefers Chinese food________ French food.

A. to

B. or

C. and

D. with

Câu 6: Smoking is harmful _____________ our health.

A. to

B. by

C. against

D. with