Câu hỏi: Don’t you know what happened _________ the people who went on holiday with us?

A. about

B. to

C. by

D. at

Câu 1: Pay attention _______all traffic signs when you are travelling in the street.

A. for

B. on

C. to

D. from

Câu 2: Vietnam carried _________an intensive program for its athletics, which included training in facilities, both home and abroad.

A. for

B. at

C. out

D. of

Câu 3: He worked hard ________ a mechanic for ten years before being appointed manager.

A. as

B. at

C. with

D. by

Câu 4: This organization is quick __________ sending relief goods to the flooded areas.

A. at

B. as

C. up

D. by

Câu 5: Reviewers describe books _______ “hard-to-put-down”, or “hard-to-pick-up-again”.

A. as

B. for

C. into

D. in

Câu 6: A beautiful clock was given _________ her by a handsome boy.

A. down

B. up

C. to

D. with