great fun it is! And good time they are having!A. What what aB. What a howC. How a howD

问题补充：

great fun it is! And good time they are having!

A. What, what a

B. What a, how

C. How a, how

D. How, how a

答案：

(答案→)A. What, what a

B. What a, how

C. How a, how

D. How, how a

解析：感叹句主要有what和how构成：

1、what修饰名词或名词短语，有以下两种形式： 1. What+a(an)+（形容词）+单数可数名词+主语+谓语！或是：What+名词词组+主语+谓语！ 2. What+(形容词）+可数名词复数或不可数名词+主语+谓语！

2、How引导的感叹句。 how用来修饰形容词、副词或动词。其结构是：How+形容词（副词）+主语+谓语！

根据下文great fun it is!fun是不可数名词，可知选A。