Baby Talk

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Across
  1. 2. :a person who can hear
  2. 4. test :a test of smartness
  3. 6. :age, get older
  4. 8. :share or exchange information, news, or ideas
  5. 9. :grow or become more advanced
Down
  1. 1. :a system of hand movement
  2. 3. :a very young baby
  3. 5. :under usual conditions, usually
  4. 7. :a study of a subject to learn more about it
  5. 9. :unable to hear