it is to be a host!- I agree. A. What a great funB. How great funC. What great fun

问题补充：

--- it is to be a host!

--- I agree.

A. What a great fun

B. How great fun

C. What great fun

D. How great a fun

答案：

A. What a great fun

B. How great fun

(答案→)C. What great fun

D. How great a fun

解析：句意：---成为一个主人是多么有趣啊！---同意。fun是一个不可数名词，应该用what感叹。故选C。