Is there a new library behind your classroom?改为复数形式

Is there a new library behind your classroom?改为复数形式 IS there a library near this supermarket[改为复数形式} There is a child in the classroom.改为复数形式 There is a child in the classroom.改为复数形式. there is a new bed 怎么改为复数形式? 英译汉：Is there a library in your classroom? There is a cap behind the door.改为复数句 there is a library on north street.改为复数句 There is a library in mu school.(改为复数) There is a book.改为复数形式 There is a storybook.(改为复数形式) It's a new box.（改为复数形式） There is “only one”book o