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電子課本網(wǎng) › 第92頁

第92頁

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 Save water, Save electricity, Save paper, Do not waste water, Do not use too many plastic bags, Do not cut down too many trees

water

clean

coal

oil

Cars

Wood

clean

bags

bottles

bad

paper

glass

1 b 2 a 3 a 4 b 5 b 6 b

1 water, clean 2 coal, oil, Cars 3 Wood, clean 4 bags, bottles, bad, paper, glass