I'd like to tell you a story about my best friend Jane. Last week in school we had a big fight, and she didn't {#blank#}1{#/blank#} me. It all started when she asked me if she could copy my homework. I asked her why she wanted to do that, and she said that she had forgotten to do hers. I said I didn't think it was a good idea. I said it would start a bad{#blank#}2{#/blank#} and she should do her own work. She got really {#blank#}3{#/blank#} at me and said she didn't want to be my best friend anymore. I said that was OK and that I was sure she would {#blank#}4{#/blank#} it. And she did. Yesterday she told me she was {#blank#}5{#/blank#}. She said it was much better if she did her own work.

    Peter and Paul are brothers．The two boys are very{#blank#}1{#/blank#}．Peter is twelve years old．He's not tall with{#blank#}2{#/blank#}．He likes singing．His dream is to be a(n){#blank#}3{#/blank#}．Paul is fourteen years old．He is of medium {#blank#}4{#/blank#}．He usually wears school uniforms．He likes drawing．His dream is to be a(n){#blank#}5{#/blank#}．Peter and Paul work very hard．So I think their dreams will come true one day．

— No, I don't. But I have {#blank#}2{#/blank#} storybooks.

    We do not know when people invented wheels. But once it was invented, knowledge of the wheel{#blank#}1{#/blank#}quickly across the world. It is easy to move things with wheels. The first example of wheels dated from about 3. 500 to 3. 000 BC. The cart or wagon was the first vehicle which had wheels. At that time, they were pulled by humans or animals. Today, there are still carts drawn by animals in many countries. These carts are mainly used to move things or{#blank#}2{#/blank#}people. Around 2, 000 BC, the chariot(双轮敝篷马车)appeared. It moved even faster than the cart, so it soon became an important{#blank#}3{#/blank#}in the war and later was introduced to other ancient countries, such as Egypt, Persia, Greece and Rome.

    The invention of wheels is very important to the{#blank#}4{#/blank#}of new transportations. Without wheels, the invention of bicycles, motorcycles, cars, trains, and planes may not be possible.