题目内容
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
C
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题目内容
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