Sure! Here are the sentences completed with the appropriate prefixes:

1. I’m afraid to **disagree**. I don’t think that’s right at all.
2. Discipline is very important to us. We don’t like the children to **disobey** the teacher.
3. I **misunderstood** his directions and got completely lost.
4. Shall I throw these boxes away or can we **reuse** them for something else?
5. It’s very **unusual** situations. Nothing like this has happened before.
6. I **misestimated** how long the journey would take. It took an hour longer than I expected.
7. The old man walked around the corner and **disappeared**. We never saw him again.
8. I don’t know how you find anything in this office. It’s so **untidy**.
9. He has to **renew** his driving licence because it has expired.
10. They use children in their factories, which I find completely **immoral**.

Let me know if you need any more help!