阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入适当的单词或使用括号中词语的正确形式填空。

    My grandparents have seven children——two sons and five. My mother is of them. Uncle Mike is the first (children)of the family. He is 49 years old. Uncle Mike has two. They are Peter Jim. The other children of my grandparents have one child. My mother is the last child of my grandparents . She is 36 years old. She has one child ,too. That's. I have brothers or sisters, so I often play with my cousins.Ｍy cousin Peter is an English teacher a middle school in Beijing .He(want) me to go to Beijing next week.