house

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Across
  1. 4. a metal piece on a door that you lift and drop to make a sound
  2. 5. the central, busy part of a city where shops and offices are.
  3. 6. a window built into the roof that lets in natural light
  4. 7. a low-cost apartment owned by the local government, rented to people at reduced rates
Down
  1. 1. the strip of wood, metal, or stone at the bottom of a doorway that you step over.
  2. 2. the narrow shelf-like surface found under the window
  3. 3. a tiny round opening built into an entrance door that lets you check who is outside from inside the home.