1. I went to the store and bought myself a new book. (I - personal, myself - reflexive)
2. They said they would be here by now. (They - personal)
3. This is the house that Jack built. (This - demonstrative, that - relative)
4. Someone left their phone on the table. (Someone - indefinite, their - possessive)
5. Who is at the door? (Who - interrogative)
6. Which one do you prefer? (Which - interrogative)
7. It was a beautiful day. (It - impersonal)
8. We all went to the park. (We - personal)
9. You should try that new restaurant. (You - personal, that - demonstrative)
10. Everything is going to be alright. (Everything - indefinite)