Air pollution has become the biggest (o ) inthe city now.这是缺词填空

____ by air pollution,acid rain ____ spread everywherea.Caused; has b.To be caused; has 为何选A,B错在哪? If there are [ ]people driving, there will be [ ] air pollution. If there in( )pollution,the air in oIf there in( )pollution,the air in our city will be ( )dirtier. air Pollution什么意思 There will be _____ pollution in the future.The rivers and air will be cleaner. Air pollution has become the biggest (o ) inthe city now.这是缺词填空 英语翻译　　Pollution Haze　　Recently,the topic of air pollution has again aroused more and more attention since pollution haze,a kind of weather,has appeared increasing frequently in our cities.Just as the picture showed,when pollution haze the serious air pollution has done severe harm to people's health这里的has done怎么理解 there (will be) serious air pollution if people use more and more cars.为什么用will be? 英语翻译As has been pointed out before,air pollution is becoming more and more serious in large cities. There( )less pollution in five years A.was B.will has C.has D.will be Air pollution is more serious than water pollution.的意思? There will be less pollution （ ） the air.这里要填什么,A.on B.in C.for Air pollution is___most serious problem in many major cities and___measires should be taken to deal填哪个冠词 Indoor & Outdoor Air PollutionWhen people talk about air pollution ,they usually think about smog （烟雾）,acid rain （酸雨） ,and other kinds of outdoor air pollution .But do you know that air pollution also can be inside homes and other bui 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?