Classroom objects

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Across
  1. 3. to put things on it.
  2. 4. using to write on the white board.
  3. 5. n opening in the wall or roof of a building, car, etc., usually covered with glass, that allows light and air to come in and people to see out; the glass in a window
  4. 7. your teacher writes on it.
Down
  1. 1. you sit down on it.
  2. 2. to watch youtube, films, cartoon or to study...
  3. 6. you open it if you want to enter a room.