Ответ:

  1. Dimitris is sitting on a chair at his desk.
  2. There is a poster on the wall.
  3. There are some bookshelves beside the small table.
  4. The table is opposite the door.
  5. There is a rug under the table.
  6. Dimitris is holding a piece of paper in his hand.
  7. Dimitris's schoolbag is on the floor under his desk.