Mixed.

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Across
  1. 2. A black flying mammal.
  2. 3. The planet where we live.
  3. 5. A vehicle that takes some of us to school.
  4. 6. A man's best friend.
  5. 7. Something we need to write.
  6. 9. What we do with a musical instrument.
  7. 10. A marsupial that jumps.
  8. 11. Someone who treats us when we're ill.
  9. 13. The second day of the week.
  10. 14. The ninth month of the year.
  11. 15. A beautiful insect.
Down
  1. 1. The colour of snow.
  2. 4. Used for transport and sport.
  3. 5. A green vegetable.
  4. 8. A building where we go to read books.
  5. 12. The colour of the sun.
  6. 13. A sport with balls and raquets.