this is a family tree.(对划线部分提问.注:划线部分为family teee)____ ____ this?

问题描述:

this is a family tree.(对划线部分提问.注:划线部分为family teee)____ ____ this?

What is
这是什么?
如有问题,欢迎继续追问:)
求采纳~