Air pollution is the biggest problem in the cities. If we 2.3. ______ more and 2.4 ______our cars less, we wouldn’t be polluting the air we breathe. 2.3) A) wouldn’t have wasted B) wouldn’t waste C) will not waste 2.4) A) had w...

Air pollution is the biggest problem in the cities. If we 2.3. ______ more and 2.4 ______our cars less, we wouldn’t be polluting the air we breathe. 2.3) A) wouldn’t have wasted B) wouldn’t waste C) will not waste 2.4) A) had walked, had driven B) walked, drove C) walk, drive