Past simple vs. Past Participle

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Across
  1. 2. past simple AND past participle of FIGHT
  2. 4. past simple AND past participle of COST
  3. 6. past participle of EAT
  4. 7. past participle of FALL
  5. 9. past participle of DRAW
  6. 11. past participle of DO
  7. 13. past participle of FORGIVE
  8. 14. past simple of EAT
  9. 16. past simple AND past participle of BUY
  10. 17. past simple of COME
Down
  1. 1. past participle of CHOOSE
  2. 3. past participle of DRIVE
  3. 4. past simple of CHOOSE
  4. 5. past simple of FORGIVE
  5. 7. past simple AND past participle of FIND
  6. 8. past simple of DRAW
  7. 10. past participle of DRINK
  8. 12. past simple AND past participle of CATCH
  9. 13. past simple AND past participle of FEEL
  10. 15. past participle of FORGET