参考答案 One possible version

Everyone has his dream. My dream is to be a doctor. When I was in Grade Seven, I was sick and often went to see doctors. The doctors were very friendly to me and they often cheered me up. With the help of them, I was getting better. Now I’m very healthy. Since then I have hoped to become a doctor. In order to achieve my dream, I will study hard. I’ll give my love to the patients as much as possible and help them out of danger.