Câu hỏi: If there was a technical failure, Gagarin might never get __________ to the Earth.

A. to

B. back

C. from

D. down

Câu 1: Your friend is always complaining__________ her job.

A. with

B. about

C. of

D. to

Câu 2: We’ll buy a smaller house whenthe children have grown____________ and left home.

A. to

B. up

C. at

D. for

Câu 3: We were very grateful _________ our friends for all of their assistance.

A. to

B. for

C. off

D. with

Câu 4: I waited _____ 10 o'clock and then went home.

A. until

B. to

C. for

D. in

Câu 5: If you don’t pay attention_________ the teacher, you won’t understand the lesson.

A. for

B. to

C. at

D. about

Câu 6: We need to set ___________ early tomorrow.

A. off

B. of

C. for

D. to