Sort 45 crossword

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Across
  1. 4. the sound of laughing
  2. 6. when you force air out of your throat
  3. 8. a group of sentences about one idea
  4. 10. strong or hard to break
  5. 11. the science of forces, motion and energy
  6. 12. your brother’s or sister’s son
  7. 14. past tense of “fight”
  8. 17. all the letters from A to Z
  9. 20. a smart ocean animal
  10. 21. a group of words
Down
  1. 1. past tense of “teach”
  2. 2. past tense of “catch”
  3. 3. a ghost or something not really there
  4. 5. a prize you win
  5. 7. a child without parents
  6. 9. not smooth
  7. 10. a big win or success
  8. 13. a huge animal with a trunk
  9. 15. a girl child
  10. 16. behaving badly
  11. 18. something you use to call people
  12. 19. as much as needed