-You can't imagine____great fun chatting online is.-Really?But it may cause you a lot of trouble.A.what B.how C.why D.whether

-You can't imagine____great fun chatting online is.-Really?But it may cause you a lot of trouble.A.what B.how C.why D.whether
-You can't imagine____great fun chatting online is.-Really?But it may cause you a lot of trouble.
A.what B.how C.why D.whether

-You can't imagine____great fun chatting online is.-Really?But it may cause you a lot of trouble.A.what B.how C.why D.whether
what
imagine 后面是一个宾语从句.宾语从句其实是感叹句转化过来的.对名词表示感叹,我们需要使用what

感叹句---->fun---->名词---->what

A.what
what是修饰名词fun的；how和why是副词，况且词义也不对；whether引导一个句子。

what