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

A. for

B. at

C. in

D. on

Câu 1: Our study is very important____________ our future and useful_____________ our country.

A. for/ for

B. to/ to

C. for/ to

D. to/ for

Câu 2: You should make use___________ the books you have.

A. of

B. by

C. to

D. up

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

A. through 

B. up

C. after

D. by

Câu 4: I think your mother should let you make___________ your own mind.

A. down

B. to

C. up

D. of

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

A. by

B. to

C. with

D. about

Câu 6: Many of the stories are based______________ rumor.

A. on

B. by

C. to

D. with