being done和done用法的疑问Being examed twice a year is a basic rule.这句用being done为什么不能用done?

分类: 作业答案 • 2022-02-15 13:57:09

问题描述：

being done和done用法的疑问
Being examed twice a year is a basic rule.这句用being done为什么不能用done?

答