Irregular verbs-- Simple past

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Across
  1. 4. drive
  2. 5. drink
  3. 7. thrown
  4. 9. ring
  5. 12. choose
  6. 13. swim
  7. 14. fall
  8. 15. be
  9. 16. Know
Down
  1. 1. do
  2. 2. become
  3. 3. take
  4. 6. eat
  5. 8. write
  6. 10. grow
  7. 11. wear
  8. 13. see
  9. 14. fly