Singular to Plural Crossword

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Across
  1. 3. Car
  2. 4. Book
  3. 7. Camera
  4. 8. Photograph
  5. 10. Child
  6. 13. Sandwich
  7. 15. Wish
  8. 16. Person
  9. 17. House
  10. 18. Box
Down
  1. 1. Woman
  2. 2. Pitch
  3. 3. Chair
  4. 5. Switch
  5. 6. Hamburger
  6. 9. Television
  7. 11. Dish
  8. 12. Bus
  9. 14. Man
  10. 16. Phone