-----is john who always interrupts the teacherin class which makes the

题目

-----is john who always interrupts the teacherin class which makes the
---is john who always interrupts the teacherin class ,which makes the teacher angry.答案是it,我想问this为什么不行

答案

这里是一个主语从句,用来强调“正是john老是打断老师的授课”,主语从句,用it做形式主语.不能用this啊.