A Crossword for Grandma!!!

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Across
  1. 3. Large stream
  2. 4. 1+1=
  3. 7. Ancestor clock
  4. 8. Plastic thing on a shoelace
  5. 9. the Eighth planet
  6. 10. Top of the house
Down
  1. 1. A female horse
  2. 2. What you are doing!
  3. 5. noise a baby makes
  4. 6. Your egg laying friend.