外國人問what’s up 怎麼回？

Here's how you can respond:

• Wonderful! 非常好啊
• Pretty good. 挺不錯的
• Not too shabby. 還算可以
• Nothing much going on. 沒什麼特別的
• It's all good. / Just the usual stuff. 還可以啊
• Same as always. 和往常一樣