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: Do you believe _______ ghosts?

A. no preposition

B. in

C. on

D. at

Câu 2: Was your friend successful ___________ getting a loanfrom the bank?

A. in

B. by

C. with

D. about

Câu 3: Mary always take good care__________ her children.

A. off

B. of

C. by

D. with

Câu 4: Why don't you ask_____________ a pay increase?

A. for

B. by

C. to

D. with

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

A. by

B. to

C. with

D. about

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