I still don't know what____to him.He ought to come now.(回答时告诉我为什么_英语解答

I still don't know what____to him.He ought to come now.(回答时告诉我为什么
A.had happened B.was happened C.has happened D.happened

人气：290 ℃　时间：2020-02-19 16:24:38

解答

C 首先happen是不及物动词,没有被动形式,然后,主句是现在时,所以从句也一定是现在时的一种,这里现在时只有现在完成时