When I was young, I liked to do voluntary (志愿) work. Once I offered (give) out water to the runners in a competition in our city. I was happy to see them passing by and taking a bottle of water. Seeing them, I thought maybe I could play a role in the competition, too! Then the next year I joined in the competition with a few (friend). I hoped I could finish the race as (quick) as I can.
It was very hot on day of the competition. After running for about 5 miles, I was so tired I decided I would never do this again. The first 5 miles was pretty hard to me. I jogged (慢跑)and walked. At times, I didn't know if I could (finish).
Near the end, a 70-year-old man appeared. He ran very fast. I (feel) a little embarrassed (尴尬的). I was about 50 years (young) than him, but I couldn't even keep up with him. At that time, I knew that I should never give up. Then I tried my best to run faster. Finally, as I reached the end, I was happy that I am successful and my father bought a gift me. The old man set a good example to me. I didn't regret (后悔) having this experience I learned a lot from that competition.