1. I've got work。
2. I've got to work now。
3. I'm going to deal with my stuff。
4. I'm going to be busy。
5. I'm going to be engaged。
6. I'm going to be tied up。
7. I'll be busy later。
8. I have something to attend to later。
9. I'll have something going on later。
10. I'll be occupied later。
