A 12-year-old boy got lost on the subway after going out alone on Sunday. The boy came to Shanghai to visit his parents during the summer holiday. Although his parents were happy to see him, they {#blank#}1{#/blank#} little time with him. The boy did his homework for two {#blank#}2{#/blank#} and felt bored, so he went out to play on the subway. He had fun playing there. But when he felt tired and hungry, and wanted to go home, he didn't know at which station he should get off. The police found the boy {#blank#}3{#/blank#} on the subway and took him to the office. They bought him something to eat and asked him some questions. The boy's parents couldn't find him after arriving home. They felt {#blank#}4{#/blank#} and called the police right away. They got to the police office and saw {#blank#}5{#/blank#} son. They were very happy and thanked the police.

    There is a nature park in the southwest of our city. The government built it to{#blank#}1{#/blank#}the rare animals. The nature park has been the{#blank#}2{#/blank#}of our city.

    Yesterday my friends and I{#blank#}3{#/blank#}it. The workers there asked us not to{#blank#}4{#/blank#}animals. Many animals are in{#blank#}5{#/blank#}because people kill them for their meat and fur. Another reason is that people are taking{#blank#}6{#/blank#}their land and{#blank#}7{#/blank#}their water dirty. The{#blank#}8{#/blank#}is becoming very serious.

    I learnt much yesterday. I think people should{#blank#}9{#/blank#}up more comfortable houses for the animals and help them live in{#blank#}10{#/blank#}. We should do our best to protect them, because protecting them is protecting ourselves.