what's going up?

what's going up? what's up、what's the matter、what‘s going on与what’s the matte what's up与 what's going on 与what's wrong之间的区别 what's he going to do when he -----(grow)up? What's up(同义句）What's going ____ _____ what's going on/what is up/what the hell区别 what's going wrong What’s going on? What’s going on. what's going on... What's going on? What's Going on