Answer:
1. I can pack my clothes quickly and be there early.
2. The train leaves promptly at 7:00 a.m.
3. Our class is going on a field trip tomorrow.
4. Our chaperones will watch us carefully.
5. Aunt Susan has called several times.
6. She is so funny!
7. We laugh loudly at her jokes.
8. The choir performed extremely well.
9. Each song was emotional.
10. They practiced daily for a month.
11. The cat crept slowly toward a squirrel in the backyard.
12. The squirrel twitched nervously.
13. Finally, both left swiftly to avoid a battle.