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: We congratulate you ___________ your successful flight.

A. on

B. about

C. by

D. with

Câu 2: Don't shout ___________ the child when he makes a mistake.

A. out

B. up

C. down

D. at

Câu 3: Ken prefers Chinese food________ French food.

A. to

B. or

C. and

D. with

Câu 4: Mary always take good care__________ her children.

A. off

B. of

C. by

D. with

Câu 5: She always takes good care _______ her children.

A. for

B. in

C. of

D. with

Câu 6: Our study is very important____________ our future and useful_____________ our country.

A. for/ for

B. to/ to

C. for/ to

D. to/ for