I haven't heard from my brother for a long time,what_____to him?A_英语解答

I haven't heard from my brother for a long time,what_____to him?
A happened B to happen C was happened D happening

人气：441 ℃　时间：2020-02-05 12:22:08

解答

a
首先happen的主语一般是物,其次happen没有被动语态,其三根据上下文可知问的是过去发生的事情,综述,用a.为什么不用C呢？C是被动语态，我已说了，happen这个单词没有被动语态。