Lesson 25 "The Fun They Had"

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Across
  1. 3. put in
  2. 5. better
  3. 7. argue
  4. 8. figured out
  5. 10. improvement
Down
  1. 1. using machines
  2. 2. something used without result
  3. 4. hundreds of years (time)
  4. 6. person who makes sure things are working
  5. 9. usual