Word Formation

Here are the completed sentences using the words derived from the words in bold:

1. I was disappointed to learn the children were misbehaving at the party yesterday.
2. I can't find the receipt. I think I've misplaced it.
3. Don't trust him! He's a dishonest man.
4. I've had a misunderstanding with my teacher.
5. Some young people are rude and disrespect their elders.
6. What are the disadvantages of buying from flea markets?