英语小组活动中，Kate给Li Yan看自己的全家福，Li Yan问了哪些问题？请你读一读，帮她们把对话补充完整吧。

A. Who's this? B. How old is she? C. Oh, she's beautiful. D. Who's that old woman? E. Who's that?

Kate：Look, Li Yan. This is my mother.

Li Yan：

Li Yan：

Kate：This is my father.

Li Yan：

Kate：That's my sister.

Li Yan：

Kate：She's twelve years old.

Li Yan：

Kate：She's my grandmother.