This is my ＿is John's sister?空处填写

This is my ＿is John's sister?空处填写 This woman is my mother's sister. This is my friend,John. Linda is John's sister同义句 This is my sister,s skirt.改为复数句子 This is my sister's room改为否定句 This is (my sister's) sweater 对划线部分提问 this is my sister's twentieth birehday的同义句 this is my sister's twentieth birthday同义句 this is my sister还是she is my sister This is your sister That is my 说明为什么选This is my _____ dictionary.A sister's B sister,Mary's