I do some cleaning about my work table and sort out all my old teaching materials.

我打扫了一下我的工作台，并且把旧的教学资料进行了分类和整理。

youdao

I do some cleaning about my work table and sort out all my old teaching materials.

我打扫了一下我的工作台，并且把旧的教学资料进行了分类和整理。

youdao