电子课本网 第12页

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They were having a fire drill.
Once a month.
In America./In the USA.
Crossing guards.
(更多请查看作业精灵详解)
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It's best to get low to the floor, cover your nose and mouth with a wet cloth and then get away from the fire through a fire exit. (言之有理即可)
      In our school, we usually do running during the 30-minute break. When the bell rings, students walk out of the classroom to the playground. Then we are lined up and run together. I think it is quite boring. In my opinion, we need different kinds of activities at break, such as shuttlecock exercises, rope skipping and so on. Through these activities, we can really relax ourselves and experience the joy of sports. Also, we will be more energetic in class. 
      Different kinds of activities at break time will surely benefit us a lot. I really hope our school can organize more of them to ensure the overall development of us students.