We should take action to r_____ the air pollution.还有一题Who did you have an i_____ with yesterday

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• We should take action to r_____ the air pollution.还有一题Who did you have an i_____ with yesterday
• Indoor & Outdoor Air PollutionWhen people talk about air pollution ,they usually think about smog （烟雾）,acid rain （酸雨） ,and other kinds of outdoor air pollution .But do you know that air pollution also can be inside homes and other buildings.（1 ）.Scientists have done research on pollution at labs and universities.（2 ）.Let’s take a closer look at the different types of indoor air pollution .Many people spend their most time indoors --- as much as 80%∽90
• 英语作文：advice on how to avoid indoor air pollution（60〜80words）