英语句子改错:That is too hard for me to work out the math problem.____

问题描述:

英语句子改错:That is too hard for me to work out the math problem.____
只有一处错误的.

将原句改为
It's too hard for me to work out the math problem.
It在这里是做形式主语,真正的主语是the math problem
所以it不能用that代替.