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【题目】In order to find the missing child, villagersall they can over the past five hours.
A.did
B.do
C.had done
D.have been doing

【答案】D
【解析】句意:为了找到失踪的孩子,村民们在过去的五小时里做了他们所能做到的一切。根据时间状语“ over the past five hours,”可知从过去到现在 将来还有可能继续进行,直到找到孩子为止,故用现在完成进行时。选D。

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