Choose the most appropriate indefinite pronoun to complete each sentence.
1. I'm bored. There's ________ to do in this tiny town!
2. Does ________ know where I left my car keys?
3. I've looked ________ for my phone, but I still can't find it.
4. ________ told me that the exam was cancelled, but I'm not sure who.
5. The room was completely empty. There was ________ there.
6. I don't want ________ to eat right now; I'm not hungry.
7. This is a secret. ________ must know about it!
8. Let's go ________ quiet where we can actually talk.
9. It was a great party; ________ had a fantastic time.
10. I'm sure I've seen that man ________ before, but I can't remember where.