【whenthehousewasbeingbuilt,变成分词作状语,怎么变?后半句是itfelldown】
<p>问题：【whenthehousewasbeingbuilt,变成分词作状语,怎么变?后半句是itfelldown】<p>答案：↓↓↓<p class="nav-title mt10" style="border-top:1px solid #ccc;padding-top: 10px;">刘良兵的回答：<div class="content-b">网友采纳 beingbuilt你最好把后半句给出来 那应该是whenbeingbuilt,thehousefalldown 或者Beingbuilt,thehousefalldown
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