A knock at the door( ）him.a .interrupted b.was interrupted c.interrupting d.was interrupting
问题描述：
A knock at the door( ）him.a .interrupted b.was interrupted c.interrupting d.was interrupting
选哪个,为什么
答
选A
敲门声打断了他.
这是简单的过去式句子.
如果选B,是被动.就要说 he was interrupted by a knock at the door.
如果选C,是进行时,缺少动词be,并且interrupt是短暂动词,不对
如果选D,是过去进行时,interrupt是短暂动词,不对