the bed was swept off the roof by a gust of wind.改写为被动语态句
问题描述：
the bed was swept off the roof by a gust of wind.改写为被动语态句
答
这句话本身就是被动语句了,楼主是不是弄错了.
如果改为主动形式的话,应该为：
A gust of wind swept the bed off the roof.额，题就是这么出的，可能他印错了吧 。