what happened?和 what's happening?是不是意思差不多?,

what happened?和 what's happening?是不是意思差不多?, What 's the trouble with him和 What happened to him意思差不多吧? What happened与What's happening的区别 “what's the happening ”和“what the happened”的区别是什么啊? What's happening there what is happening 和 What is happened和 what had h what's happening 和 what's wrong的区别 What happened和what's happened有什么区别呀? what is happening和what happened怎么回答求人指点谢谢 what is happening.what happened.what has happened.what is up what's ____on monday?A.happen B.happened C.happening D.has h 为什么有what happened却没有what happening,而只能是what is happening,两个动