2-16.Plase tell me what has happened ,when it happened ,how it happened and what has done about ithas done 错了 应该改为 为什么~
问题描述：
2-16.Plase tell me what has happened ,when it happened ,how it happened and what has done about it
has done 错了 应该改为 为什么~
答
did
答
agree with sensehbb
答
has been done
因为意思是对于这件事做了什么/什么事被做了
是被动态
答
did
前面不都是过去时吗，这里也用过去时咯