It’s very important to deal with the rubbish properly in cities. One of the important reasons   is that it   41   the environment in cities. Rubbish must be thrown away or reused correctly.   or it may cause a lot of   42  . Another important reason is that it is   43   for people’s health. Rubbish may pollute the air and the water. People will get ill when they breathe polluted air or   44   polluted water.

There are a lot of ways to   45   the rubbish. Some rubbish should be sorted out and sent to certain places. Some of it such as newspapers and glass can be reused. This can save a lot of   46  . However, the harmful rubbish must be dealt with carefully because   47   will pollute cities. The polluted water mustn’t be poured into rivers   48   it has been dealt with. Generally, passing   49   is the most necessary for the government. It is the rule of preventing the rubbish

        50   polluting our environment. Save our city! Let’s do it at once.