20 words 20 clues

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Across
  1. 2. store paper
  2. 5. living orgasms
  3. 7. language
  4. 9. add sum or divide
  5. 11. sharper utensil
  6. 14. measure anything
  7. 15. Most non real world subject
  8. 16. experiments
  9. 17. look brighter
  10. 18. Put things in
Down
  1. 1. most used in school
  2. 3. feet ball field
  3. 4. ball/field
  4. 5. ball/goal court
  5. 6. written on
  6. 7. clearsomething
  7. 8. physical improvements
  8. 10. on protection nowadays
  9. 12. cards flash notes
  10. 13. folder mini file saver