Lifetodayhasmanyproblems.Oneofthebiggestis 41（pol...

问题详情：

       Life today has many problems. One of the biggest is  41（pollute）. water pollution  42       (make) our rivers and lakes dirty. It kills our fish and pollutes our drinking water. Noise pollution makes us talk  43  (loud) and makes us become angry more easily. Air pollution is   44  most serious kind of pollution. It’s bad  45  living things in the world.  We need to do a lot of things to fight pollution.  46    , factories must clean their waste water before it  47 (throw) away, and they mustn’t blow dirty smoke into the air. We can’t throw waste things   48   the ground. Secondly, we can go to work by bus  49  with our friends in the same car. 50 there are fewer people driving on the roads, there will be less pollution. Rules are not enough. Everybody must help to fight pollution.

【回答】

41. pollution  42. makes/ has made  43. louder  44. the  45. to/for 46. Firstly  47. is thrown  48. on  49. or  50. If

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