题型：语法填空（语篇） 题类：常考题 难易度：普通
牛津深圳版七上英语Module 2 The natural world unit 3 the earth单元测试
Air is all around us. It is around us as we walk and play. From the time we were born air is around us on every side. When we sit down, it is around us. When we go to bed, air is also around us. We live in air. We can live food or water for a few days, but we can't live for more than a few (minute) without air. We take in air.
When we are working running, we need more air. When we are (sleep), we need less air .We live in air, we can't see it. We can only feel it when it (move). Moving air is called (windy). How can we make air move? Here (be) one way. Hold open book in front of your face, close it (quick). What can you feel? What you feel is air.
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