完形填空
阅读下面短文，从短文后所给的A、B、C三个选项中选出能填入相应空白处的最佳选项。
Air pollution(污染) is a big problem. It's bad for all         things on Earth，and it is not the only one kind of         .Water pollution makes fish          and pollutes our drinking water. Noise pollution makes us get     more easily.
Many countries are making rules(规定) to fight against pollution. They try to stop people           burning coal(煤)in the city and releasing(排放) dirty smoke into the     .And if people use fewer cars，the air will get       .
       earth is our home. We must protect it and not destroy it. That is to say, we should keep the land, water and air        .At the same time, we had better plant more trees       they can provide a lot of things for us and make our earth beautiful.
A. living              B. good               C. dead
A. problem            B. pollution          C. air
A. die                B. live                C. run
A. happy              B. angry              C. excited
A. for                B. against            C. from
A. air                B. ground             C. trees
A. more dangerous     B. worse              C. better
A. An                 B. The                C. /
A. clean              B. dangerous          C. healthy
A. so                B. but                C. because