阅读短文，判断句子正误。
I am Danny. There are four people in my family. My father, my mother, my sister and me. Last Sunday was a fine day. My family went to Zhongshan Park by subway. We went hiking in the park. We were happy and excited. Father is stronger than all of us, so he took many things in his bag. We played games, sang songs and danced in the park. But suddenly(突然), my sister fell down. Her leg hurt. She had to see a doctor. So we went to the hospital by taxi.