what’s up要怎麼回？

以下是一些可能的回答方式：

1. Excellent. 很好啊
2. Pretty good. 還不錯呢
3. Not too shabby. 還行吧
4. Nothing much going on. 沒什麼特別的啊
5. Doing alright. / Just the usual. 還可以喔
6. Same as always. 老樣子啊