题目内容：

Tony and I are good friends. We tried to walk across the United States of America. We’re not exactly sure why we were doing it. Part of 1.    was to test ourselves; to see if we could face the challenges. When I was 2.    teenager I often daydreamed that I was going to walk across the United States after I 3.    (graduate) from high school. 4.    , I didn’t do that.

Before I knew it I was 5.    my thirties ,married , a job, yet still had this idea in my mind with each passing year. I figured I was too old and my opportunity 6.    (pass). Then, a few years ago, I met Tony , 7.    was in his thirties and quit his job as a civil engineer in New York City to walk across the United States.He wasn’t doing it for a cause as part of an organization. He was doing it 8.      (simple) because he loved to walk and discover. The idea was back and I no longer had an excuse. We planned on averaging 20 miles a day and taking some days off 9.      (rest), so we expected the walk to take about 6 months realizing it could take10.    (long). We were in no hurry: The total distance would have been about 3,100 miles.