Thecleverboymadeaholeinthewa

发布时间：2020-07-28 17:45:14

The clever boy made a hole in the wall, ________ he could see what was happening inside the house．A.in whichB.through whichC.for whomD.on which

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B解析由句意知“通过洞口”，要用介词“through”．
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