Answer:
1. Don't 2. Haven't 3. Won't 4. Can't 5. Didn't
1. Peter dropped Jessica's pencil on the floor.
2. We didn't know where to go for dinner.
3. The nail won't budge because it's stuck in the timber.
4. All the student's books were collected by the teacher.
5. Jess wasn't happy because her friend wouldn't play with her.
6. There's a pizza in the fridge, and I'd like to heat it up.
7. The tree's leaves were starting to fall to the ground.
8. The painter's brush was dry because we'd forgotten to wash it.
9. We've got to hurry up, or we'll be late to the party.
10. I've got a lot of invitations to write for my friend's birthday.
Hope this helps and have a great night! =D
~sunshine~