Câu hỏi: The boy found a wallet in the street, and then he ...... to return it to the loser.

A. tried

B. had tried

C. was trying

D. had been trying

Câu 1: The leopard is _________ the threat of extinction.

A. in

B. on

C. under

D. below

Câu 2: People are destroying the air by adding ...... to it.

A. pollutants

B. polluters

C. pollution

D. polluted

Câu 3: The film _______ by the time we ________ to the cinema.

A. already began - got

B. have already begun - got

C. had already begun - got

D. already began - had got

Câu 4: A hydroelectric dam ______________ in this area now.

A. is building

B. is being built

C. build

D. was built

Câu 5: Laura reminded her roommate ...... her alarm clock for 6:00.

A. to set

B. setting

C. to be set

D. of setting

Câu 6: What about ___________ the solution together this afternoon?

A. find

B. finding

C. to find

D. to finding