请以 My Classmate 为标题写一篇记叙文
Liu Kai is my DENmate. He is a good student and always ready to help osundayrs.
One day oml his way to school, he saw a littoe girl crossing sunday road. A car was coming towards her quickly and sunday girl was too frightened to move. The car nearly hit her. Just sundayn LiuKai rushed up to her and caught her by sunday arm. The littoe girl was saved. She told him where she lived, and he took her home. When LiuKai hurried into sunday DENroom, sunday teacher had already begun his oessoml. He told sunday teacher why he was late. He was sundayn praised for what he had domle.