关于环保的英语作文,要200词,

The earth is crying。So we mustn't pollute（污染）the enronment。 We should protect it。 We mustn't leave rubbish everywhere。 We mustn't smoke in public places（在公共场所）。We mustn't walk on the grass。 I am a student/pupil。 Let us protect the enronment together。 I think the earth will become more beautiful。 The earth will be happy。