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

A. pollutants

B. polluters

C. pollution

D. polluted

Câu 1: The panda's ...... habitat is the bamboo forest.

A. nature

B. natural

C. naturalized

D. naturally

Câu 2: 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 3: Could you please provide us ……………..some more modern equipment?

A. for

B. by

C. in

D. with

Câu 4: What about ___________ the solution together this afternoon?

A. find

B. finding

C. to find

D. to finding

Câu 5: I threw my old trainers and bought some new .................. .

A. ones

B. one

C. some

D. any

Câu 6: Let’s _________ water by turning off tapes when not using.

A. save

B. to save

C. saving

D. saved