Câu hỏi: The pens made___________ plastic are very cheap.

A. by

B. with

C. of

D. to

Câu 1: 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 2: We congratulate you ___________ your successful flight.

A. on

B. about

C. by

D. with

Câu 3: Why don't you ask_____________ a pay increase?

A. for

B. by

C. to

D. with

Câu 4: I think your mother should let you make___________ your own mind.

A. down

B. to

C. up

D. of

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

A. at

B. on

C. of

D. about

Câu 6: Most of the streets were named __________ national heroes.

A. after

B. with

C. by

D. up