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

A. in

B. at

C. on

D. to

Câu 1: His father used the money he won to set_________ his own company.

A. down

B. up

C. at

D. in

Câu 2: When you pick _________a book for the first time, check that it is not too difficult.

A. in

B. since

C. on

D. up

Câu 3: They held a party to congratulate _______ their son’s success to become an engineer.

A. on

B. in

C. to

D. up

Câu 4: Don’t you know what happened _________ the people who went on holiday with us?

A. about

B. to

C. by

D. at

Câu 5: He didn’t even have the intelligence to call _________ an ambulance.

A. to

B. for

C. by

D. with

Câu 6: Governments have enacted laws to protect wildlife ________commercial trade and overhunting.

A. from

B. without

C. for

D. at