一道表语从句题,

问题描述:

一道表语从句题,
when asked about the reason for moving for USA,he said"soccer is not huge in USA,so that's ( ) I want to make a difference.
A.why B.where
为什么是B

我觉得楼上解释都不对虽然是选where,但是这里的where所代替的并非是in the USA个人认为,这里的where所代替的是一种引申的含义,即"在某一方面/状况"做出改变,使其不同.试着对比这两个句子1.Soccer is not huge in USA...