Câu hỏi: 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 1: A sign warned motorists ______ dangers.

A. of

B. for

C. about

D. a and c

Câu 2: Smoking is harmful _____________ our health.

A. to

B. by

C. against

D. with

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

A. for

B. in

C. of

D. with

Câu 4: Was your friend successful ___________ getting a loanfrom the bank?

A. in

B. by

C. with

D. about

Câu 5: The pens made___________ plastic are very cheap.

A. by

B. with

C. of

D. to

Câu 6: Many of the stories are based______________ rumor.

A. on

B. by

C. to

D. with