This is her friend改为复数形式.2.This girl is my sister对my sister提

This is her friend改为复数形式.2.This girl is my sister对my sister提 This is my sister.改为复数形式、 1.This is my sister.改为复数句2.That is my friend.改为复数句 This is my sister 改为复数句 英语答题【This girl is my sister】改为一般疑问句【This is my sister】改为复数连词 This is my friend 改为复数形式 This is your sister.改为复数形式 把This girl is my sister.改为一般疑问句 将下列句子变成复数形式：This is my sister. This is my sister,s skirt.改为复数句子 That is my sister改为复数形式 That is my sister改为复数形式 This is his cousin改为复数形式 I'm Mike Sm