what for 和what‘s up的区别

what's up和what's on的区别? what's been up?和what's up?什么区别 whats up 和 what's up的区别 ,怎么回答 how are you 和 what 's up的区别是什么 what for,why not,what's up和so what's up和what's the matter的区别和用法有什么不同? what's up?what's new,how are you doing?的区别和分别得回答 what is up 和what was up here 的区别 what's up与 what's going on 与what's wrong之间的区别 what's up,what's on和what's what's more和what's up的what’s是缩写吗 看美剧what up与what's up区别,what is happened与what happened区别