Understanding words crossword

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Across
  1. 1. to poke someone
  2. 5. greatest in amount
  3. 6. to cut up vegetables
  4. 11. singular
  5. 13. firm or rigid
  6. 14. another name for mum
  7. 17. to scream out
  8. 18. the sea is made up of this liquid
  9. 20. a person that may teach you sport
  10. 22. no longer young
  11. 23. a series of linked metal
  12. 24. human beings
  13. 25. frozen rain in winter
  14. 26. to leave a job
  15. 27. fruit or vegetables that are ready to eat
Down
  1. 2. mum is making a ________ of cookies
  2. 3. this or _______
  3. 4. physical exercise
  4. 7. 1/10 is also know as one_______
  5. 8. let you light _______
  6. 9. the solid surface of the earth
  7. 10. a car drives on this
  8. 12. myself
  9. 15. water that falls from the sky
  10. 16. night and ______
  11. 17. play or performance
  12. 18. tell me what you want
  13. 19. tear or pull
  14. 20. cattle
  15. 21. _______are you going?
  16. 25. found in the night sky
  17. 26. at a fast speed