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

A. through 

B. up

C. after

D. by

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

A. in

B. by

C. with

D. about

Câu 3: She was very upset ________ the news of her father’s death.

A. at

B. by

C. with

D. about

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

A. for

B. in

C. of

D. with

Câu 5: Mary always take good care__________ her children.

A. off

B. of

C. by

D. with

Câu 6: A sign warned motorists ______ dangers.

A. of

B. for

C. about

D. a and c