Nhờ sửa bài giúp

I was at my college when suddenly I recieved a call phone and I was ask to go to the race , so immediately I pick my bag and left the college when I arrived to the race track everything it was ready so I got on my car I was ready to the race and the traffilight was in red when it passed to green the race started ...

I was doing the best of me and slowly I started to climb positions still to reach the first position . so when the last lap was missing someone reached me then surpassed me. he was the winner , I wonder how he did it? if I had a big advantage.