Câu hỏi: Where is Jimmy? – He is ________ work. He is busy _________ his monthly report.

A. at/ with

B. at/ at

C. at/ to

D. on/ with

Câu 1: You should pay more attention __________ what your teacher explains.

A. in

B. at

C. on

D. to

Câu 2: We benefit greatly ____________the medicines and other products that biodiversity provides.

A. from

B. without

C. for

D. at

Câu 3: A game is divided ____________quarters.

A. from

B. into

C. at

D. of

Câu 4: Toxic chemicals in the air and land have also driven many species ______ the verge of extinction.

A. of

B. about

C. at

D. to

Câu 5: His father used the money he won to set_________ his own company.

A. down

B. up

C. at

D. in

Câu 6: When you pick _________a book for the first time, check that it is not too difficult.

A. in

B. since

C. on

D. up