1. (2017八下·鄞州期中) 通读全文，根据短文理解，选择最佳答案填空。   
    One morning, I was waiting at the bus stop, worried about 1  late for school. There were many people waiting in line at the bus stop, but most of them just stared (盯着) at their mobile phones, listening to music or going through the WeChat2 . No one talked or laughed.
    3 the bus finally came, we all hurried on board. I got a place next to the window, so I had a good view of the sidewalk. A boy  4  a bike caught my attention. He  5  beside the bus while waving his arm. I heard a passenger behind me shouting to the  6 , but he  7  to stop until we reached the next stop. The bus drove fast, and the boy tried his best 8   up with it. It   9   that he was a little tired, but he still kept riding. And he was carrying   10    over his shoulder and shouting.
    Finally, when we came to the next stop, to our surprise, the boy ran up to the  11    of the bus. I heard an exciting conversation. Then the driver stood up and asked, "  12    anyone lose a suitcase at the bus stop?" A woman on the bus shouted, "Oh, dear! It's mine." She pushed her way to the driver and took the suitcase   13  . Everyone on the bus began talking about   14   the boy did, and the crowds of strangers suddenly became  15  to one another.
    Sometimes even something small can change the relationship among people a lot! What an unforgettable experience.