Whose book are these They are him her Mr.Green's老师说的是 Mr.Green's 为什么?快 急

whose is this book Whose are these books 为什么这句对whose is this book 而这句Whose are these books 就不对呢? Whose keys are these? whose sunglass are these? ——Whose book are these?——They`re( our )books 为什么是our? whose are these pencils?和whose pencils are these? whose pens are these?还是whose are these pen?区别? whose are these dirty shoes? whose ______ (photo) are these whose are these 怎么回答 whose+checks+are+these是什么意思 These are their -(book) Who bag is that?Whose is that girl?This book is mine book.These clothes are her. 单项选择：Whose book are these?They are （ ）.A.him B.her C.Mr.Green D.Mr.Green's Whose book are these They are him her Mr.Green's老师说的是 Mr.Green's 为什么?快 急 Whoes _____(book) are these Whose are these clothes?改为同义句.（ ) ( )are these? whose are these clothes 同义句_________ ___________ are these. Whose shoes are these怎么回答