in order to find the missing child,villagers___all they can over the past five hours.A.did B.do C.had done D.have been doing求详解求详解求详解求详解

in order to find the missing child,villagers___all they can over the past five hours.A.did B.do C.had done D.have been doing求详解求详解求详解求详解
in order to find the missing child,villagers___all they can over the past five hours.
A.did B.do C.had done D.have been doing
求详解求详解求详解求详解

in order to find the missing child,villagers___all they can over the past five hours.A.did B.do C.had done D.have been doing求详解求详解求详解求详解
D 现在完成进行时,现在一阶段已经做了,接下来有可能还要继续做下去,就用现在完成进行时.

选D。
over the past five hours在过去的一段时间内，因此用现在完成进行时。表示在过去的这段时间内一直在干什么。

您好，此题选D
have been doing：从过去到现在一直在做而且还有可能一直继续下去。
用在此题中，意思是“搜救人员5个小时一直在搜索失踪的孩子，并且为了找到还有可能继续下去”，故选D.have been doing.