The other day , a young worker lighted a cigratte after the long day's work. He smoked for a while and then dropped it on the grond . He didn't think too much as he usually did that . Having turned off the light , he went out of the room and directly to home. The next day,he heard of that his factory being on fire for a whole night and he firefighters sill woked hard now. He was amazed for it really shocked cause when he left last night the workplace was still OK. And now ,the only thing he could do was to wait , wait for a cause and a notice. The fire on the factory lasted for a shocking two weeks and this disaster caused a loss of 50 million dollars in total. No matter how regretful he was , he was responsible to te accident.