what u up to该怎么回答

what are you up to?我应该怎么回答 What's u up to 什么意思 What's up?怎么回答? what's up怎么回答 what is up 怎么回答 怎么回答 " What's up." what you up to和where u up what's up 如果别人问我我该怎么回答 英语翻译hi my names ******so whats up?what are you into?我该怎么回答?我 如果有美国人问你what's up?你该怎么回答? what u up 外国人说what's up怎么回答