(By the time) she got to class,the teacher has already started teaching Awhen Bbefore为什么不能用before?对不起应该是 had already started..

分类: 作业答案 • 2021-12-20 07:24:32

问题描述：

(By the time) she got to class,the teacher has already started teaching Awhen Bbefore
为什么不能用before?
对不起
应该是 had already started..

答