It’s known to all that.改成what is known to all is that 中为什么要加is?我说的意思是把it换成what，that后为什么要加is

分类: 作业答案 • 2021-12-19 16:28:03

问题描述：

It’s known to all that.改成what is known to all is that 中为什么要加is?
我说的意思是把it换成what，that后为什么要加is

答