What type of sentence are the sentences below? Simple, compound, or complex.

1. When the Olympic athlete broke the world record, the crowd cheered.
2. I will clean up my room after I finish unloading the dishwasher.
3. The documentary about penguins was fascinating to me!
4. I am a huge chess fan, and I play in tournaments every weekend.
5. You can borrow this book since I finished it last night.
6. The eighth grade students this year are smart, funny, and energetic.
7. The marching band played loudly, and the football team won the game.
8. You may finish your homework, or you may read a book.
9. I always jump when I hear a large clap of thunder.
10. The red tulips in the garden are beautiful and smell heavenly.
11. The kittens played with the yarn, and the puppies watched closely.
12. I will make all A's this year unless I'm distracted by video games.
13. She walked down the street and around the corner to the store.
14. Unicorns are mythical creatures; they gallop across rainbows.
15. He is the happiest boy because he won first place in the talent show.