似乎有点难--------英语填空{顺便说明理由好吗?}NO.1 When we got there,the road __________{sweep}
问题描述：
似乎有点难--------英语填空{顺便说明理由好吗?}
NO.1 When we got there,the road __________{sweep}
答
had been swept
当我们到达那里的时候路面已经清扫干净了
when 引导的从句中的got决定了他的时态--过去式
路不可能自己打扫自己 所以用过去完成时的被动语态 had been swept
swept是sweep的过去分词
答
was being swept 或者 had been swept
答
was being sweeping
过去进行时,被动.
答
was being swept
when决定了用过去进行时，而路只能被打扫