摘要： Stop cutting trees, the environment will become worse. A. and B. then C. or

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Stop cutting trees, _______ the earth will become worse and worse.

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Stop cutting trees, _______ the earth will become worse and worse.

A.
and
B.
then
C.
because
D.
or

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Stop cutting trees, _______ the earth will become worse and worse.

A．and B．then C．because D．or

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Stop cutting trees, _____ the earth will become worse and worse.

A. or
B. and
C. but
D. then

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It 's our duty to_________people_________too many trees.

A. stop; cutting down B. prevent, to cut down

C. keep; cutting down D. make; cut down

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