问题补充：
good time we had at the party last night!
Yes. It was exciting party that I would never forget it.
A. What, so
B. How, such
C. What a, such an
D. How a, so an
答案：
A. What, so
B. How, such
(答案→)C. What a, such an
D. How a, so an
解析：以what引导的感叹句的基本句型结构为what a/an +adj+可数名词单数+主语+谓语！；what+adj+可数名词的复数/不可数名词+主语+谓语！以how引导的感叹句的基本句型结构为how+adj/adv+主语+谓语！
such…that作“如此…以致”解，连接一个表示结果的状语从句。与so…that 意思相同，但用法不同。如：so…that这一结构中，so后边可加形容词或副词， 而such后边要用名词（这个名词前面可以带形容词，也可以不带）。
