English plurals: Fill in the plural of the following words

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Across
  1. 6. baby
  2. 8. species
  3. 9. fox
  4. 11. leaf
  5. 13. chair
  6. 14. echo
  7. 15. woman
  8. 16. penny
  9. 19. match
  10. 20. wife
Down
  1. 1. bus
  2. 2. potato
  3. 3. fish
  4. 4. mouse
  5. 5. tooth
  6. 7. jeans
  7. 10. sheep
  8. 12. life
  9. 17. scarves
  10. 18. brother