27.Enough to stop the forest since the 1980’s. A.has been done; be cut down B.has done; cutting down C.has been done; being cut down D.had done; from being cut down 查看更多

 

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Enough        to stop the forest       since the 1980’s.

       A.has been done; be cut down

       B.has done; cutting down

       C.has been done; being cut down

       D.had done; from being cut down

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Enough _______ to stop the forest _______ since the 1980’s.

[  ]

A.has been done; be cut down

B.has done; cutting down

C.has been done; being cut down

D.had done; from being cut down

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