Câu hỏi: Deforestation _________ destroying Earth’s plant and animal variety.

A. are

B. be

C. is

D. being

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

A. in

B. on

C. under

D. below

Câu 2: What about ___________ the solution together this afternoon?

A. find

B. finding

C. to find

D. to finding

Câu 3: I would like to send these letters …………………..air mail.

A. in

B. with

C. by

D. over

Câu 4: The two children blamed each other ...... the window.

A. to break

B. breaking

C. for breaking

D. having broken

Câu 5: After she ________ hospital, she had a long holiday.

A. leaves

B. is leaving

C. had left

D. has left

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

A. save

B. to save

C. saving

D. saved