It's __ fun a comedy A.to watch B.watch C.watching D.for watching拜托知道答案的请告诉我、并说...

问题描述:

It's __ fun a comedy A.to watch B.watch C.watching D.for watching拜托知道答案的请告诉我、并说...
It's __ fun a comedy
A.to watch B.watch
C.watching D.for watching拜托知道答案的请告诉我、并说明一下原因,谢谢、急等回复…拜托了…

应该是:
It's fun watching a comedy.