China still has a long way to go in saving a fortune for the people .这句话里面,这个in是什么用法.

问题描述:

China still has a long way to go in saving a fortune for the people .这句话里面,这个in是什么用法.
同上,补充IN的其他用法

china be/has in doing sth.
正处于...状态中;正在做...