问题描述：
改复数句子
This is my friend
This is a book
That is her brother
This is a bike
That is an eraser
It is a red orange
He is a teacher
What's this
This is my mother
He is a Chinese boy
This is my friend
This is a book
That is her brother
This is a bike
That is an eraser
It is a red orange
He is a teacher
What's this
This is my mother
He is a Chinese boy
问题解答：
我来补答展开全文阅读