Kate lives in London with her parents. She is a schoolgirl. Today is Kate's birthday and she's fifteen years old. Her father's name is Smith. He works in a hospital. People think he is a good doctor. Kate's mother is a nurse. She is a very good nurse. Kate has two brothers and a sister, and they study in China. Her elder(大) brother speaks Chinese very well and has many friends there. He is a college (大学) student. But her younger brother and sister are middle-school students. Both of them are studying Chinese very hard and want to be teachers of Chinese in their country(国家).