THE HEAVILY ……… ATMOSPHERE IN SOME INDUSTRIAL REGIONS IS CALLED&#...

187. - 300 CAU TRAC NGHIEM CCA
300 CAU TRAC NGHIEM CCA
187. The heavily ……… atmosphere in some industrial regions is called"smog", a word derived from "smoke" and "fog".A. polluteB. pollutedC. pollutionD. pollutant>>>B