Life today is much easier than it was hundreds of years ago, but it has brought new problems. One of the biggest problems is pollution. To pollute means to make things {#blank#}1{#/blank#}. Pollution comes in many forms. We see it, smell it, drink it and {#blank#}2{#/blank#} hear it.

    Man is now slowly polluting the whole {#blank#}3{#/blank#}

    Air pollution is still the most serious. It's bad for all living things in the world, {#blank#}4{#/blank#}it is not the only kind of pollution. Water pollution kills our fish and pollutes our drinking water. Noise pollution makes us {#blank#}5{#/blank#}more easily.

    Many countries are making rules to {#blank#}6{#/blank#}pollution. They stop people {#blank#}7{#/blank#}burning coal in houses and factories in the city, and from putting dirty smoke into the air. Pollution by SO₂ is now the most dangerous kind of air pollution. It is {#blank#}8{#/blank#}by heavy traffic. We are sure that if there are fewer people driving, there will be {#blank#}9{#/blank#} air pollution.

    The Earth is our home. We must take care of it. That means {#blank#}10{#/blank#}the land, water and air clean .And we must take care of the rise in pollution at the same time.

    One afternoon many years ago, I got out and had a walk in the park near my home. Later, I sat down on a bench and {#blank#}1{#/blank#}.

    I watched a little boy, about 2 years old, running freely on the grass as his mother watched from a {#blank#}2{#/blank#} distance(距离). The boy would fall to the grass, get up and {#blank#}3{#/blank#} looking back at his mother, run as fast as he could as if nothing happened.

    When kids fall down, they don't think of the fall as a failure. But they think of it as a learning {#blank#}4{#/blank#}, they try and try until they succeed. Each time he got up, he looked so confident and natural. His only aim was to run as freely as he could.

    I learned a lot from the boy on that afternoon. I understand what kind of attitude I should have towards my future.