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: Governments have enacted laws to protect wildlife ________commercial trade and overhunting.

A. from

B. without

C. for

D. at

Câu 2: Not all books belong _________this class.

A. in

B. to

C. for

D. at

Câu 3: His father used the money he won to set_________ his own company.

A. down

B. up

C. at

D. in

Câu 4: Do you know anyone who might be interested _________buying an old car?

A. on

B. in

C. with

D. about

Câu 5: You should pay more attention __________ what your teacher explains.

A. in

B. at

C. on

D. to

Câu 6: It is important to have someone that you can confide ________.

A. up

B. in

C. at

D. with