Câu hỏi: Smoking is harmful _____________ our health.

A. to

B. by

C. against

D. with

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: She always takes good care _______ her children.

A. for

B. in

C. of

D. with

Câu 3: The Americanpeople shared ___________ the Soviet people their satisfaction for the safe flight.

A. by

B. with

C. at

D. about

Câu 4: If you look __________ the book, you can find what you need.

A. through 

B. up

C. after

D. by

Câu 5: Mary always take good care__________ her children.

A. off

B. of

C. by

D. with

Câu 6: 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