I'm sorry but I'd like to go back to my stuff now.
不好意思我先干我的事了.
That's all.Let's have a break.My (things) are being unattended.
没什么了,让我消停一下吧~我的东西还没做好（我的XX没人看管,例如水开了之类）
Don't forget our appointment,see you tomorrow~
别忘了我们的约会,明天见吧!
之类的吧.