【Ididn`tknow__________becauseitwasdark.A)what`shappenedB)whatwashappenedC)whathadhappenedD)happenedwhat选什么?为什么?】
<p>问题：【Ididn`tknow__________becauseitwasdark.A)what`shappenedB)whatwashappenedC)whathadhappenedD)happenedwhat选什么?为什么?】<p>答案：↓↓↓<p class="nav-title mt10" style="border-top:1px solid #ccc;padding-top: 10px;">何香玲的回答：<div class="content-b">网友采纳 c 1.happen没有被动语态B错误 2.前面有did,所以happen用过去的过去.选c
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