询问家庭人数：How many people are there...? — 英语阅读题

阅读短文，回答问题。 My name is Lily. Let me tell you about my family. How many people are there in my family? There are six. They are my grandpa, my grandma, my father, my mother, my little brother and me. My grandpa likes walking in the park. My little brother is two years old. We often go to the park together on Sunday. Question: How many people are there in Lily's family? Who are they?