___ I sympathize,I can't really do very much to help them out of the difficulties.

问题描述:

___ I sympathize,I can't really do very much to help them out of the difficulties.
这里为什么用while

其实很简单,这里while是虽然的意思.
as 和 as long as 都是“由于”的意思,不通顺.
even就跟不对了.直接排出.