Is she your friend的复数形式

Is she your friend的复数形式 Is she your friend?写出下列句子的复数形式 Is this your friend?改为复数形式 Is she your friend?(改为复数句) Is she your mother?复数形式 Is she your sister?怎么变成复数形式 英语啊,求救~下面的句子都改成复数形式This is my uncleIs that his friend?Is she Is this your umbrella?的复数形式 How is your daughter 的复数形式 IS SHE YOUR AUNT?的复数是什么 复数形式转换Is she his friend.Yes,it is.This is a ( ) ( ) Susan`s 变复数句1.This is my booy2.Is that his uncle3.Is she your friend