good time we have in the park today!A. HowB. WhatC. What aD. How a

问题补充：

good time we have in the park today!

A. How

B. What

C. What a

D. How a

答案：

A. How

B. What

(答案→)C. What a

D. How a

解析：当中心词是名词的单数形式时，要用以“what a/an”引导的感叹句。