【He()achairwhilehe()upanddownA.broke;hadjumpedB.wasbreaking;jumpedC.hadbroken;jumpedD.broke;wasjumping解释为什么这样做】
<p>问题：【He()achairwhilehe()upanddownA.broke;hadjumpedB.wasbreaking;jumpedC.hadbroken;jumpedD.broke;wasjumping解释为什么这样做】<p>答案：↓↓↓<p class="nav-title mt10" style="border-top:1px solid #ccc;padding-top: 10px;">马明的回答：<div class="content-b">网友采纳 D.broke;wasjumping while引导的句子 主句用一般过去时态,while的句子用一般过去进行时态
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