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thetopic“E
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t”1Whyareplasticbagsharmfultothee
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TOPIC2E
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1Whichtypesofe
ergyshouldweusewoodcoalpetroleumwaterpower
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ergyorsolare
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ergysuchasheata
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ergysupplyimprovethequalityoftheairwebreatheoffsetgree
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2Whe
everwewatchTVwearehelpi
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