“老师,老师!他们又扔粉笔头了!”一下课,我的“密探”急匆匆跑来向我报告。前段时间,劳动委员向我反映,打扫卫生时总是发现有很多粉笔头,都是班级某些人乱扔的。他们互相砸,地上到处都是,有些同学还被误伤,更有甚者,故意把整支好的粉笔掰断来砸,后面的黑板报也在他们的你来我往中被蹭掉了不少。我听后,大为光火。我让他监督,下 “Teacher, teacher! They throw chalk!” “After class, my” Spy "came hurriedly to report to me. Some time ago, the working committee reported to me that there were always a lot of chalk sketches that I saw when cleaning my health, which were thrown by some people in the class. They smashed each other, the ground is full, some students were accidental injuries, what is more, deliberately put a good piece of chalk breaking off to smash, the back of the blackboard newspaper also in their to you I come to be rub off not less. After I listen, the light of fire. I let him supervise, next