My sister has just moved into a new house and she has been working hard all morning. she has been trying to get her new room in ordere, But this has not been easy, because she own nearly one thousand books. To make matters worse, the room is rather small. so she temporarily put the books on the floor. At the moment, they cover every inch of floor space and she actually has to walk on them to get in or out of the room. A short while ago, I helped  her to carry a new bookcases up the stairs. I went into her room and got a big surprise when I saw all those books on the floor. ' It look like a pretty carpet,' I said. I gazed at it for some time then added, 'You don't need bookcases at all, you can sit here in your spare time and read the carpet.'