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: Maintaining biodiversity is important _______ us in many ways.

A. in

B. for

C. from

D. by

Câu 2: He worked hard ________ a mechanic for ten years before being appointed manager.

A. as

B. at

C. with

D. by

Câu 3: A beautiful clock was given _________ her by a handsome boy.

A. down

B. up

C. to

D. with

Câu 4: When are you leaving __________ Singapore? This week or next week?

A. for

B. to

C. from

D. of

Câu 5: They held a party to congratulate _______ their son’s success to become an engineer.

A. on

B. in

C. to

D. up

Câu 6: A game is divided ____________quarters.

A. from

B. into

C. at

D. of