题目内容：

 

good, loud, living, pollution, easily, pollute, waste，most

Life today is much   73  . However, there are new problems. One of the biggest ones is pollution. Water   74   has made rivers dirty. It kills fish and   75   our drinking water. Noise pollution makes us speak  76   and become angry more  77  . Air pollution is the  78  serious kind of pollution. It’s bad for all  79   things in the world.