____it is to talk with such a funny man!

题目

____it is to talk with such a funny man!
A.what a fun
B.how a fun
C.what funny
D.what fun
顺便讲一下how和what的用法有何不同

答案

D
fun不可数
how adj.XXX is/are
what (a/an) adj.XXX it/they is/are