House

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Across
  1. 4. I enter inside house through
  2. 5. I post letter here
  3. 9. I study here
  4. 10. My house gets light and air through
  5. 11. You need me to cook food
Down
  1. 1. A place for all living things
  2. 2. People live here
  3. 3. Visit me regularly to stay healthy
  4. 6. This make walls
  5. 7. Young birds live here
  6. 8. This protects house from sun's heat and rain