Câu hỏi: The pens made___________ plastic are very cheap.

A. by

B. with

C. of

D. to

Câu 1: You should make use___________ the books you have.

A. of

B. by

C. to

D. up

Câu 2: A sign warned motorists ______ dangers.

A. of

B. for

C. about

D. a and c

Câu 3: It was very nice__________ him to give me a lift.

A. of

B. by

C. to

D. on

Câu 4: How would the body react__________ the extreme changes in temperature?

A. by

B. to

C. with

D. about

Câu 5: 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 6: If you look __________ the book, you can find what you need.

A. through 

B. up

C. after

D. by