1. watch - watched
2. clean - cleaned.
3. stop - stopped.
4. arrive - arrived
5. return - returned
6. cook - cooked
7. walk - walked
8. visit - visited
9. work - worked
10. look - looked
11. like - liked
12. iron - ironed
13. play - played
14. study - studied
15. love - loved
16. open - opened
17. start - started
18. water - watered
19. climb - climbed
20. stay - stayed
21. call - called
22. kiss - kissed
23. tidy - tidied
24. wash - washed
