Write the past simple of the following verbs

Write the past simple of the following verbs.
1.watch ...watched....
2. clean
3. return......
11. cry.........
12. water......
21.finish.........
22. close........
13. drop...............
23. dance.....
4. stop........
14. call........
15. stay.........
16. study..........
5. stay.........
6. walk.......
7. shop.............
17. play.......
18.help.........
19. wash......
8. tidy........
9. smile.........
10. look.......
20. climb......
24. carry.......
25. decide...........
26. laugh..........
27. continue...
28. explain............
29.live........
30.arrive.........