问题标题:
【一道英语选择题,闲人勿扰Much___tohelpthefarmersinourcountryaftertheearthquake.A.hasdoneB.havebeendoneC.wasbeendoneD.hasbeendone】
问题描述:

一道英语选择题,闲人勿扰

Much___tohelpthefarmersinourcountryaftertheearthquake.

A.hasdone

B.havebeendone

C.wasbeendone

D.hasbeendone

卢华阳回答:
  D太简单就不用解释了吧!
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