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

A. for/ for

B. to/ to

C. for/ to

D. to/ for

Câu 1: Why don't you ask_____________ a pay increase?

A. for

B. by

C. to

D. with

Câu 2: Was your friend successful ___________ getting a loanfrom the bank?

A. in

B. by

C. with

D. about

Câu 3: 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 4: She was very surprised ________ the grade she received.

A. at

B. on

C. of

D. about

Câu 5: Most of the streets were named __________ national heroes.

A. after

B. with

C. by

D. up

Câu 6: Do you believe _______ ghosts?

A. no preposition

B. in

C. on

D. at