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In order to find the missing child,villagers ________ all they can over the past five hours.(2012·安徽)
A.didB.do
C.had doneD.have been doing
D
考查动词时态。句意:为了找到那个丢失的孩子,在过去的五个小时里,村民们做了他们所能做的一切事情。根据句中的can及时间状语“over the past five hours”可知,此处应用现在完成进行时。
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