Выбери и обведи нужный предлог. Example: There is a picture on / in / at the wall.

1)    There are a lot of books on the shelf.
2)    There are chairs next to the fireplace.
3)    There is a computer on the desk.
4)    There is a new carpet on the floor.
5)    There is a big poster on the wall.
6)    Have you got a walkman of  your own?