Câu hỏi: I waited _____ 10 o'clock and then went home.

A. until

B. to

C. for

D. in

Câu 1: We areall aware____________ the importance of the environment protection.

A. of

B. about

C. to

D. of

Câu 2: I turned ____________ their offer because they weren’t going to pay me enough money.

A. to

B. down

C. out

D. with

Câu 3: If you don’t pay attention_________ the teacher, you won’t understand the lesson.

A. for

B. to

C. at

D. about

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

A. down

B. in

C. with

D. at

Câu 5: Are you acquainted _____ the lady?

A. with 

B. about

C. to

D. at

Câu 6: _____ the children left, the house was very quiet.

A. After

B. Before

C. On

D. To