This is the best way which I think of and that the mice can be cleared away .

问题描述:

This is the best way which I think of and that the mice can be cleared away .
*修饰不应该用that么?为什么用 which

当有两个定语从句时一个用,如果一个用了that或which,那么另一个就用which或that.因为后面的另一个定语从句用了that,为了避免重复所以用which.