It is urgent that the acute problem of air pollution in the

It is urgent that the acute problem of air pollution in the It is reported that PM2.5pollution is the main problem( )air 翻译the level of air pollution in that city is four times as h 英语that指代问题1.The problem of pollution in this city is more se What is the cause pollution of air? air pollution is a problem in the city cfnter.怎么翻译 The air pollution in suzhou is less than that in other citie It is reported that PM2.5 pollution is the main problem( )ai The air pollution is one of the biggest c____ in China today the teacher told us that pollution (is) a serious problem in Pollution problem和the problem of the pollution 区别 Air pollution is one of the b____problems in our life 按首字母应该