Câu hỏi: Do you believe _______ ghosts?

A. no preposition

B. in

C. on

D. at

Câu 1: A sign warned motorists ______ dangers.

A. of

B. for

C. about

D. a and c

Câu 2: Our study is very important____________ our future and useful_____________ our country.

A. for/ for

B. to/ to

C. for/ to

D. to/ for

Câu 3: We congratulate you ___________ your successful flight.

A. on

B. about

C. by

D. with

Câu 4: 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 5: He was in orbit around the Earth __________ a speed of more than 17,000 miles per hour.

A. at

B. in

C. by

D. on

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

A. after

B. with

C. by

D. up