PAST TENSE WORDS - Write the past tense for these words

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Across
  1. 1. see
  2. 5. fly
  3. 8. save
  4. 9. buy
  5. 11. sleep
  6. 13. drive
  7. 14. swim
  8. 16. walk
  9. 18. read
Down
  1. 2. eat
  2. 3. run
  3. 4. fall
  4. 5. feel
  5. 6. write
  6. 7. jump
  7. 10. hide
  8. 12. play
  9. 15. sit
  10. 17. drink