The Fun They Had

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