Week 13 spelling words

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Across
  1. 3. without doubt
  2. 4. a person whom one knows
  3. 6. for the reason that
  4. 9. taking care or paying attention
  5. 11. a flat surface
  6. 12. facts provided or learned about something or someone
  7. 14. the time between
  8. 16. having all the necessary or appropriate parts
  9. 18. a cause or explanation
Down
  1. 1. in addition
  2. 2. belonging to or associated with the person
  3. 3. a thing that is unspecified or unknown
  4. 5. a point or way in which people or things are not the same
  5. 7. response to a question
  6. 8. easily understood or done
  7. 10. a number
  8. 13. an additional person or thing
  9. 15. at all times
  10. 17. up to