Here are the fill-in-the-blank sentences completed with the appropriate words:

1. **Although** Peter was not invited to the party, he was the first to come.
2. **Although** he promises he won’t tell lies again, I won’t trust him anymore.
3. We won the game **despite** having lost two players.
4. **Despite** the bad weather, we went on our school picnic.
5. **In spite of** the congestion, we weren’t late for the meeting.
6. **Although** he’s rich, he is always upset.
7. I couldn’t sleep **despite** being exhausted.
8. **Although** Sally hates crowded places, we’ve invited her to the prom.
9. I find the film boring **despite** many people liking it.
10. **Although** working slowly, he rarely makes mistakes.

Feel free to let me know if you need any further assistance!