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

A. by

B. to

C. with

D. about

Câu 3: If you look __________ the book, you can find what you need.

A. through 

B. up

C. after

D. by

Câu 4: Ed depends ________ his family for financial support.

A. on

B. in

C. of

D. at

Câu 5: Smoking is harmful _____________ our health.

A. to

B. by

C. against

D. with

Câu 6: How long have they been working _____________ the company?

A. for

B. at

C. in

D. on