One day, mamma and dad went out, leaving me alone at home. I was doing my homework suddenly I heard some sound of "Dong! Dong! Dong!"At first I thought, "Who is knocking at the door with so loud a sound?" I looked out from the door slit and saw a man with stealthy behavior picking the lock of the door.

 

　　It was a thiefl I was so frightened that I didn‘t know what to do for a short time. I was just a kid, and if he broke in, I was certainly no match for him. Just at that moment a good idea occurred to me. I shouted loudly, "Mom, dad is calling you! "Fortunately it worked. The thief was scared away. A bad man can never be wiser than a good one.