I've got work to do.
1. Lit. I'm too busy to stay here any longer. Jane: Time to go. I've got work to do. John: Me too. See you. Bob: I have to leave now. Bill: So soon? Bob: Yes, I've got work to do.
2. Fig. Do not bother me. I'm busy. Bill: Can I ask you a question? Jane: Not right now. I've got work to do. Mary: There are some things we have to get straightened out on this Wilson contract. John: I've got work to do. It will have to wait.