A knock at the door __him .A,interrupted B was interrupted C interrupting D was interruping

问题描述:

A knock at the door __him .A,interrupted B was interrupted C interrupting D was interruping

A. 单三人称,主动形式不是“他被敲门声打断了么?”意译确实是这样子,也可以是he was interruptedby........,但是knock在前就是单三