the plural in English

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Across
  1. 3. ladies
  2. 4. children
  3. 5. feet
  4. 7. thieves
  5. 8. women
  6. 9. cars
  7. 11. boxes
  8. 12. potatoes
Down
  1. 1. days
  2. 2. sandwiches
  3. 4. cities
  4. 6. wives
  5. 7. tomatoes
  6. 9. cups
  7. 10. men
  8. 11. boys