easy crossword puzzle

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Across
  1. 2. lectern
  2. 4. a cow
  3. 7. i don't know
  4. 8. star
  5. 11. kat
  6. 14. card
  7. 15. bowl
  8. 16. peep
  9. 17. ???
Down
  1. 1. song
  2. 3. superhero
  3. 5. weapon
  4. 6. heart
  5. 9. charger
  6. 10. a word
  7. 12. outdoors
  8. 13. flower