, this place was covered with trees many years ago.

—I think it must be very beautiful.

    The world is in danger. At one time there were 1,300 different plants, trees and flowers in Holland, but now only 860 remain(剩余). The others have been destroyed(破坏) by man. We are changing the earth, the air, the water and everything that grows and lives. We can't live without these things. If we continue doing like this, we will destroy ourselves.

    What will happen in the future? Perhaps it is more important to ask "What must we do now?" The people who will be living in the world of tomorrow are the young of today. A lot of them know that conservation(对自然环境的保护) is necessary. Many are helping to save our world. They plant trees and protect animals in forest. In a small town in the United States, a large group of volunteers cleaned the banks of their rivers. Young people may hear about conservation through a record called No One's Going to Change Our World. It was made by the Beatles, Cliff Richard and other singers. The money from it will help to protect wild animals.

    Steve found a job on a farm. He's the strongest and youngest. He ate most, sleeps most, but worked 1.  He hated to use his 2 and knew little. He had to do some unskilled(无技巧的)  work. He always said he's tired and hoped to have a 3 rest. So he 4 less money than his workmates.

    Winter came. The workers were told to get ready 5 the next year. Only Steve did 6. The farmer told him to cut down some trees in the forest. The young man went there with a chair. He felt lonely in the forest and was afraid of the 7. During his work, he looked around and sang 8, and nobody knew what he was singing.

    Three days passed. Steve didn't cut down any trees. The farmer felt strange. He decided 9 to find out how the young man was doing there. To his surprise, Steve was cutting a tree, sitting on a chair.

    "Why are you 10 here to cut the tree?" asked the farmer angrily.

    "Because I can't work if lying down sir!"