Let's have look at this picture of our sitting room. As you come into room, you notice a piano, with a low music-stool in front of it. Next to the piano there is a tall bookcase, standing against the wall. On the left is a large window. Under the window there is a radiator, but you can't see it, because it is behind the settee. On the settee there are two cushions. The fireplace is at the other end of the room. On each side of the fireplace there is an armchair. An old lady is sitting in one of the chairs, but nobody is sitting in the other one, is empty. In the center of mantelpiece there is a clock and above it an oval mirror. On the right you can see standard lamp. Opposite the fireplace you can see a small table with an ash-tray and some newspapers on it. By the table there is small chair. On the extreme right, there is radiogram. The floor is covered with a beautiful thick carpet. An electric light is hanging from the middle of the ceiling. At night, when it gets dark, we switch on the light and draw the curtains. During the day, the light comes in through the window.