Is this your English book?单复数互换

Is this your English book?单复数互换 Is this your book?单复数句互变 Is this your book ? 变为复数句 this your book改复数,单复数句型各变疑问句.she is my mother.变疑问句,否定回答 t Are they your pens? 单复数互换 How much is this English book?(改为复数形式） This is an English book(改为复数句） Is this an English book?改为复数句 this is an English book 改为复数句 What color is your jacket?(单·复数句互换） Is this your an English book?该错 Is this your book?