Câu hỏi: We were very grateful _________ our friends for all of their assistance.

A. to

B. for

C. off

D. with

Câu 1: I’m not familiar ____________ his name, but his face seems familiar me.

A. with

B. about

C. to

D. for

Câu 2: The plane took___________ very quickly.

A. of

B. off

C. to

D. up

Câu 3: It was not a problem. We looked____________ his number in the telephone book.

A. up

B. for

C. to

D. after

Câu 4: The computer isn’t working. It broke____________ this morning.

A. down

B. in

C. with

D. at

Câu 5: _____ the children left, the house was very quiet.

A. After

B. Before

C. On

D. To

Câu 6: Are you acquainted _____ the lady?

A. with 

B. about

C. to

D. at