Everypossiblemeanstopreventthe

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Every possible means ______to prevent the air pollution, but the sky is still not clear.

A．are being used	B．have been used
C．has been used	D．had been used

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Tim is in good shape physicallyhe doesn't get much exercise.

A．

B．

even though

C．

unless

D．

as long as

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Cindy shut the door heavily and burst into tears. No one in the office knew__________she was so angry.

A．where

B．whether

C．that

D．why

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I'm tired out. Iall afternoon and I don't seem to have finished anything.

A．	shopped	B．	have shopped
C．	had shopped	D．	have been shopping

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. So far nobody has claimed the money__________in the library.

A．discovered	B．to be discovered
C．discovering	D．having discovered

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I've become good friends with several of the students in my school __________I met in the English speech contest last year.

A．who

B．where

C．when

D．which

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