Câu hỏi: 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 1: He insisted ______ taking us dinner.

A. on

B. in

C. over

D. of

Câu 2: The pens made___________ plastic are very cheap.

A. by

B. with

C. of

D. to

Câu 3: Many of the stories are based______________ rumor.

A. on

B. by

C. to

D. with

Câu 4: She always takes good care _______ her children.

A. for

B. in

C. of

D. with

Câu 5: How would the body react__________ the extreme changes in temperature?

A. by

B. to

C. with

D. about

Câu 6: We congratulate you ___________ your successful flight.

A. on

B. about

C. by

D. with