题目内容：

On a cold evening with snow floating in the air, I got 1.(stick) on the road because of a flat tire(轮胎). I attempted 2.(seek) help from the passing cars, but no one stopped. As I was about to give up hope, a man 3.(drive) an old dirty car came to my aid. To be honest, I was scared when he first approached me. Eying him up and down, I thought to myself, “There is a very good chance 4. he may rob me,” He seemed to have sensed my discomfort so he tried to ease my 5.(anxious) by introducing himself. His act of kindness made me feel ashamed to have questioned his intentions. 6.was really considerate of him to stop to help a perfect stranger like me, especially in such terrible weather. Thus, after the spare tire was fitted, I asked 7. much I owed him. I wanted to pay him back. 8.(surprising), he did not take my offer but rather told me to pass the act of kindness forward and help more people 9. need. As he said those words, I noticed him wearing a smile of contentment. Helping  others seemed a very 10.（nature）thing to him. I witnessed the true beauty of human nature in him.