一道英语感叹句单选题___itistoswimintherive
___ is to swim in the river in summer! A. How funny B. What funny C. How fun D. What fun 这道题我选的是A， 可答案是D，请问A为什么不对？请详细解释一下，谢谢！
答案：funny滑稽,可笑.所以A.不对