[急]英文作文

u may first mention about the air pollution that hong kong is having now then, u should say about the ways of how to prevent the pollution becoming worse, for example issuing the law.....of coz the idea of 環保~ u should give example of how to promo 環保 like: advertising, put out more recycling bins etc~after that, u may link the air pollution to the earth be coz air pollution is a kind of problem that lead to the formation of glabel warming......and at last u may need to mention that actually the blue sky is very important for us and our offsprings therefore we should start to take the action of safing our blue sky,our earth and the best way is to be 環保