— You can’t imagine great fun playing puter games is.
— Really? But it may cause you a lot of trouble.
A. what a
B. how
C. what
D. how a
网友回答
A. what a
B. how
(答案→)C. what
D. how a
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！