One day, my brother and I were alone in our apartment,which was on the first floor of the building. The reason was that my parents had both gone for a ball party and had left me in charge of everything. 1 was doing my homework while my younger brother was watching TV. All of a sudden, the door-bell rang. Ding dong! Ding dong! My younger brother had rushed to the door before I deeided to answer the door. We both thought that our parents had come home. As a result, he unlocked the door and opened it.