classes and school supplies

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Across
  1. 4. book
  2. 6. schedule
  3. 7. biology
  4. 9. spanish
  5. 10. teacher
  6. 13. histroy
  7. 14. math
  8. 18. window
  9. 19. physics
  10. 20. quiz
  11. 21. backpack
Down
  1. 1. teacher
  2. 2. library
  3. 3. science
  4. 5. English
  5. 8. homework
  6. 11. stadium
  7. 12. computer science
  8. 15. test
  9. 16. desk
  10. 17. art