1. Walked - Walk
2. Talked - Talk
3. Cooked - Cook
4. Worked - Work
5. Played - Play
6. Cleaned - Clean
7. Helped - Help
8. Lived - Live
9. Loved - Love
10. Studied - Study
11. Tried - Try
12. Asked - Ask
13. Answered - Answer
14. Watched - Watch
15. Danced - Dance
16. Finished - Finish
17. Started - Start
18. Stopped - Stop
19. Visited - Visit
20. Waited - Wait