Câu hỏi: Why don't you ask_____________ a pay increase?

A. for

B. by

C. to

D. with

Câu 1: Ken prefers Chinese food________ French food.

A. to

B. or

C. and

D. with

Câu 2: We congratulate you ___________ your successful flight.

A. on

B. about

C. by

D. with

Câu 3: She always takes good care _______ her children.

A. for

B. in

C. of

D. with

Câu 4: We might need more food, depending ____ how many people turn up.

A. for

B. on

C. at

D. with

Câu 5: The pens made___________ plastic are very cheap.

A. by

B. with

C. of

D. to

Câu 6: Smoking is harmful _____________ our health.

A. to

B. by

C. against

D. with