广东省惠东县惠东中学九年级英语上册 Module 12 Unit 1 If everyone starts to do something, the world will be saved教学课件.pptVIP

PollutionPollutionisourgreatenemy,andwehavetofightit.Let’swatchavideoaboutpollution.Workinpairs.Lookatthepicturesandtalkaboutthem...