Irregular nouns

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Across
  1. 3. The plural of deer
  2. 5. The plural of goose
  3. 8. The plural of mother-in-law
Down
  1. 1. One foot two ****
  2. 2. More than one drive-in
  3. 4. The plural of mouse
  4. 6. The plural of sheep
  5. 7. These creatures are held in poke-balls