A、Upstairs. B、A rubbish container. C、Outside the window. D、Pieces of paper under the bed. BWhere did the strange noise come from

I live in a big old house. At night you can sometimes hear strange noises. Last Saturday I got home late. I went upstairs, washed and went to bed. My bedroom was very cold and it took me about an hour to get to Sleep Suddenly I awoke. The room was in darkness, and I could hear a sound which seemed to come from the window. I lay quite still and listened. Then I heard it again: "Scratch, scratch...scratch." It came from the waste paper basket. I turned on the light beside my bed and the noise stopped at once. I climbed out, trembling and went over to the waste paper basket. A piece of paper near the top moved ever so slightly. Then I saw a tiny gray face and two little eyes staring up into mine. It was a baby mouse. What should I do? He just sat there looking at me, as confused as I was. Carefully I picked up the basket, and carried it to the door. Then I opened the door and went back to bed. In the morning he went away.