Mr. Chris's Crossword

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Across
  1. 2. Kids sometimes swing on it
  2. 3. Look down, walk on it
  3. 5. Sometimes has a window in it
  4. 6. A animal that goes "Bark" and "Woof"
Down
  1. 1. What is this?
  2. 2. This
  3. 4. A arm and a ___