so much 和 that much

There is ______ much ______ can be done; / 答案选A，不知为什么？哪位高手能帮助一下，不胜感激. A that;that B so; which C so; that D so 有这样一道题

这[那]么些

so much那么多，一定是由于上下文决定的, 全是

that much强调可数的这么多，就这么多（强调已知的“量”）
so much强调的是“多”

至于为什么这里选A，而不选C。
如果这个是道单选题，只给了那么一个句子，那么A和C都是正确答案，给出A是正确答案的习题就太不负责任了！反而C没有上下文也可以呢that much指这[那]么多

so much money 非常，达到一种程度。 that much 表示很多的时候可代替 very much，据我了解一般用在否定句中。 比如so i think that the best people who i've hired so far have been people who didn't really have that much engineering experience.

所以我认为，到目前为止,我聘用过的最好的职员,都是一些,没有多少相关经验的人。

that much 还有一种意思是同样多。

比如i don't know how the whole thing went down exactly... but dad's dead because of me.

and that much i do know.