what is happening.what happened.what has happened.what is up.what_英语解答

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.

人气：358 ℃　时间：2020-03-26 14:08:03

解答

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）