Asrainforestsarebeing,theenvir

As rainforests are being _______, the environment pollution is becoming more and more serious.

A．cut off

B．cut down

C．cut in

D．cut up

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C．has reduced	D．has been reduced

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A．has been repaired	B．is repaired
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A．must

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A．for

B．and

C．yet

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A．to climb	B．climbing
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