“丁零零……”在悦耳动听的乐曲声中,热闹的校园逐渐安静下来。我们一如往常,静静地端坐着准备上课。“嗒、嗒、嗒……”门口传来清脆有力的脚步声。同学们好奇地向外张望。呀,不看不知道,一看吓一跳——校长来了!教室里一阵骚动:同学们 “Ding zero ... ” In the melodious sound of the song, the busy campus gradually quiet. As usual, we sit quietly for class. “嗒, 嗒, 嗒 ...... ” The door came crisp and powerful footsteps. The students curiously looked out. Yeah, I do not know if I do not know, I’m surprised - the principal is here!