Nasty verbs

1234567891011121314151617181920
Across
  1. 2. Shore
  2. 4. Sat
  3. 5. Rose
  4. 7. Mowed
  5. 9. Shone
  6. 10. Wept
  7. 13. Upheld
  8. 14. Clung
  9. 16. Mistook
  10. 18. Froze
  11. 19. Paid
  12. 20. Pled
Down
  1. 1. Shook
  2. 3. Rode
  3. 6. Swept
  4. 8. Overdid
  5. 9. Spun
  6. 11. Forsook
  7. 12. Slung
  8. 15. Went
  9. 17. Swelled
  10. 18. Flew