语法填空（共10小题；每小题1分，共10分）
阅读下面材料，在空白处填入适当的内容（不多于3个单词）或括号内单词的正确形式。
One morning , I was waiting at the bus stop , worried about      (be ) late for school .There were many people waiting at the bus stop ,   some of them looked very anxious and  (disappoint) .When the bus finally came , we all hurried on board .I got a place next       the window , so I had a good view of the sidewalk .A boy on a bike     (catch)my attention .he was riding beside the bus and waving his arms . I heard a passenger behind me shouting to the driver , but he refused    (stop ) until we reached the next stop .Still , the boy kept      (ride) . He was carrying something over his shoulder and shouting .Finally , when we came to the next stop , the boy ran up to the door of the bus . I heard an excited conversation .Then the driver stoop up and asked, “1     anyone lose a suitcase at the last stop ?” A woman on the bus shouted , “Oh dear “ It is    （I）”.She pushed her way to the driver and to the little boy .Everyone on the bus began talking about what the boy had done .And the passengers _    （sudden） became friendly to one another .