Câu hỏi: Smoking is harmful _____________ our health.

A. to

B. by

C. against

D. with

Câu 1: She was very upset ________ the news of her father’s death.

A. at

B. by

C. with

D. about

Câu 2: China became the third country in the world to be able to independently carry __________ manned space flights.

A. by

B. up

C. on

D. out

Câu 3: The pens made___________ plastic are very cheap.

A. by

B. with

C. of

D. to

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

A. like

B. up

C. after

D. back

Câu 5: She was very surprised ________ the grade she received.

A. at

B. on

C. of

D. about

Câu 6: A sign warned motorists ______ dangers.

A. of

B. for

C. about

D. a and c