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

A. down

B. to

C. up

D. of

Câu 1: A sign warned motorists ______ dangers.

A. of

B. for

C. about

D. a and c

Câu 2: Mary always take good care__________ her children.

A. off

B. of

C. by

D. with

Câu 3: How long have they been working _____________ the company?

A. for

B. at

C. in

D. on

Câu 4: Was your friend successful ___________ getting a loanfrom the bank?

A. in

B. by

C. with

D. about

Câu 5: The pens made___________ plastic are very cheap.

A. by

B. with

C. of

D. to

Câu 6: You should make use___________ the books you have.

A. of

B. by

C. to

D. up