题目

在空格处填上合适的词，使短文通顺、意思完整     Li Chengze is a 12-year-old boy. He liveshis parents in a big city. Now everyone calls him a little hero. One night it was very drycold. He went home at about 22:00. he got to an entrance of his building, he smelled a smell of pungent (刺鼻的) gas. He quickly ran to the guard room, then he knocked on the door from house to house with the worker. And he told people to open the windows and not to smoke. Athe found the place where the smell came from. Thanks to the boy, nobody in the building got hurt in the accident. clever Li Chengze is! 答案：【1】with【2】and【3】When【4】last【5】How

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