brave enough home alone clean up the park put out fire hear sb. shouting 79-year-old Mrs.Sun be aware of fire be sick in the hospital for 2 months on fire leave sth. alone 伤的很严重 为希望工程募捐 在公车上给某人让座 贫困地区的儿童 付笔与笔记本的钱 给某人募捐 给某人盖上一层湿毯子 做某事来保护自己 有时间考虑某事 阻止某人做某事