questons no one knows the answer to

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Across
  1. 4. An activity done regularly in one's leisure time for pleasure.
  2. 5. A system of communication used by a particular country or community.
  3. 6. Free time when one is not working or attending to other duties.
  4. 9. The application of scientific knowledge for practical purposes, especially in industry.
  5. 10. An activity involving mental or physical effort done in order to achieve a purpose or result.
  6. 12. The process of receiving or giving systematic instruction, especially at a school or university.
  7. 14. Time that is not taken up by work or duties.
  8. 15. An occupation undertaken for a significant period of a person's life and with opportunities for progress.
  9. 16. The action of moving from one place to another, typically over a distance of some length.
Down
  1. 1. The imparting or exchanging of information or news.
  2. 2. The state or period of being a child.
  3. 3. A time that is yet to come.
  4. 7. Activities that provide amusement or enjoyment.
  5. 8. The activity of buying goods from stores.
  6. 11. The systematic study of the structure and behavior of the physical and natural world through observation and experiment.
  7. 13. The state of being free from illness or injury.