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  1. ... problems Air poisoned with smog may harm our health. It can make our ... so bad that people sometimes have to stay indoors or wear a mask . 2009-12-05 21:45:38 補充: sorry 我睇5過眼D人...

    分類:社會及文化 > 語言 2009年12月20日

  2. ... to people ...... Air poisoned with smog may harm our health. It can make our ... so bad that people sometimes have to stay indoors or wear a mask . d).Give your suggestions about...

    分類:社會及文化 > 語言 2010年02月25日