题目内容：

    One morning, I was waiting at the bus stop, worried about__ 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 WeChat __. No one talked or laughed.

__ 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 ___ a bike caught my attention. He __ beside the bus while waving his arm. I heard a passenger behind me shouting to the __, but he ___to stop until we reached the next stop. The bus drove fast, and the boy tried his best ___ up with it. It ___ that he was a little tired, but he still kept riding. And he was carrying__ over his shoulder and shouting.

Finally, when we came to the next stop, to our surprise, the boy ran up to the __ of the bus. I heard an exciting conversation. Then the driver stood up and asked, “__ 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 ___. Everyone on the bus began talking about __ the boy did, and the crowds of strangers suddenly became__ to one another.

Sometimes even something small can change the relationship among people a lot. What an unforgettable experience!

1.A. be B. to be C. being D. been

2.A. in surprise B. with excitement C. with happiness D. in silence

3.A. Before B. Since C. Because D. When

4.A. on B. by C. in D. under

5.A. rode B. was ridden C. was riding D. is riding

6.A. policeman B. boy C. driver D. other passengers

7.A. hoped B. happened C. refused D. decided

8.A. catching B. to catch C. caught D. catch

9.A. looked B. seemed C. sounded D. felt

10.A. something B. nothing C. anything D. everything

11.A. door B. window C. back D. seat

12.A. Does B. Has C. Did D. Do

13.A. angrily B. thankfully C. noisily D. loudly

14.A. which B. how C. what D. that

15.A. excited B. friendly C. easy D. surprised