Câu hỏi: We congratulate you ___________ your successful flight.

A. on

B. about

C. by

D. with

Câu 1: Most of the streets were named __________ national heroes.

A. after

B. with

C. by

D. up

Câu 2: You should make use___________ the books you have.

A. of

B. by

C. to

D. up

Câu 3: Smoking is harmful _____________ our health.

A. to

B. by

C. against

D. with

Câu 4: He wore a hat, which made him look _______________ a spy.

A. like

B. up

C. after

D. back

Câu 5: I think your mother should let you make___________ your own mind.

A. down

B. to

C. up

D. of

Câu 6: A sign warned motorists ______ dangers.

A. of

B. for

C. about

D. a and c