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With more forests being destroyed.huge quantities of good earth each year. A. is

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With more forests being destroyed.huge quantities of good earth each year. A. is

With more forests being destroyed,huge quantities of good earth ______ each year.

A. is washing away?                     B. is being washed away?

C. are washing away?                      D. are being washed away

试题答案

D

解析: