Irregular Plurals

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Across
  1. 4. many mouse?
  2. 7. many scarf?
  3. 9. many person?
  4. 11. many thief?
  5. 12. many tooth?
Down
  1. 1. many child?
  2. 2. many goose?
  3. 3. many ax?
  4. 5. many book?
  5. 6. many foot?
  6. 8. many class?
  7. 10. many man?