it's kind * you.是to ,of 还是for 他们三个有什么区别?

问题描述:

it's kind * you.是to ,of 还是for 他们三个有什么区别?
在三个词都在形容词的后面,名词前时~

It's very kind of you!你真是太好了
It's very kind for you to do sth.你干某事真是太好了.
It's very kind to do sth.干某事真是太好了