问题补充：
I know why .
A. you’re so good at write stories
B. you’re so good at writing stories
C. are you so good at write stories
D. are you so good at writing stories
答案：
A. you’re so good at write stories
(答案→)B. you’re so good at writing stories
C. are you so good at write stories
D. are you so good at writing stories
解析：句意：我知道你为什么这么擅长写故事。位于动词know后面作为宾语从句的特殊疑问句词序应为：疑问词+主语+谓语+宾语。 因此此句应为Why you’re so good at write stories ，故选B。
