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 | What do you think about air pollution? | |
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| We need to stop polluting the air with all those machines that give off chemical fumes. | |
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| What types of machines do the United States need to get rid of. | |
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| big car's, mills, nuclear power plants, fire places, and smoking | |
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| I can't believe the problems were having because of air pollution. | |
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| Ya, I can't believe it either | |
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