Air pollution comes from dust from construction sites.就画线部分提问（dust from construction sites）还有：That aeroplane flew 26956589 kilometres.就画线部分提问（26956589 kilometres）

Where is air pollution come from?和Where does air pollution comes from?的区别?Where is air pollution come from?和Where does air pollution come from的区别？ The air pollution comes from the fire.对划线部分提问.划线部分为the fire. Air pollution comes from smoke and dest from power stations.from power stations划线提问 air Pollution什么意思 Air pollution comes from smoke,and dust( from power station) 划线部分提问（括弧内为划线部分） Air pollution comes from smoke and dust from power stations.smoke and dust from power stations划线 划线部分提问 Air pollution comes from smoke and dust from power stations.smoke and dust from power stations划线部分题问 The smell of flowers is sweet.（保持原意）Air pollution comes from smoke and dust from power stati提问华先是from后面全部 不包括from Air pollution is more serious than water pollution.的意思? 求一篇关于air pollution的文章 英语作文:Air pollution 80字 why air pollution is the most serious? Trees can help____(fight)air pollution. 为什么air pollution 是抽象名词? 初中英语词语运用有关air pollution pollution comes ()many way.为什么填in 是have the air polluted 还是 have the air pollution? we have air pollution,water pollution and land pollution.句意相同We___the air,water and land round us.