This is my sister.改为复数形式、
This is my sister.改为复数形式、
This is your sister.改为复数形式
That is my sister改为复数形式
This is my sister 改为复数句
This is her friend改为复数形式.2.This girl is my sister对my sister提
That is my sister改为复数形式 This is his cousin改为复数形式 I'm Mike Sm
This is my friend 改为复数形式
This is my brother.改为复数形式
This is my cousin.改为复数形式.
She is my sister(改为复数形式)
That is my sister.(改为复数形式)
将下列句子变成复数形式:This is my sister.