—I wonder so many people are crazy about Gangnam Style.—It's good for bodybuilding and i

问题补充：

—I wonder so many people are crazy about Gangnam Style.

—Its good for bodybuilding, and it brings people a lot of fun, you know.

A. how

B. where

C. why

D. that

答案：

A. how

B. where

(答案→)C. why

D. that

解析：C 考察名词性从句。句意：—我很好奇，为什么那么多人迷恋《江南style》这首歌。—它有利于锻炼身体，而且也很有趣。C项中的why引导宾语从句，在从句做原因状语。