That she could do such a terrible thing to he is a

问题补充：

That she could do such a terrible thing to he is a mystery to me.什么从句?如果错,第一个单词怎么改

答案：

主语从句why======以下答案可供参考======

供参考答案1:

没错，that引导的是个主语从句。

供参考答案2:

主语从句，没有错，that是可以引导主语从句的