Can You Change It to Past Tense?

123456789101112131415
Across
  1. 3. walk
  2. 5. have
  3. 6. go
  4. 8. eat
  5. 9. clean
  6. 10. talk
  7. 14. open
  8. 15. help
Down
  1. 1. play
  2. 2. watch
  3. 4. start
  4. 7. see
  5. 11. live
  6. 12. jump
  7. 13. come