what is happening.what happened.what has happened.what is up.what is going on .一般都用在什么场合呀.

分类: 作业答案 • 2022-01-02 13:48:22

问题描述：

what is happening.what happened.what has happened.what is up.what is going on .
一般都用在什么场合呀.

答

现在正在发生什么
发生了什么
曾经发生过什么
怎么了
一切还好吗（打招呼用的）