-Whose book is this?-It must __ Mary.I saw her read it this morning.

Whose book is this? whose is this book? Whose is this book ?对吗? whose french book is this? This is my book用whose提问 whose book is this 的同意句仍用whose Whose is this book?这句话对吗?与Whose book is this?是同义句吗 Whose is this book?和Whose book is this?是一样的吗? Whose book is this和Whose is this book是同义句吗? whose is the book on the chair?和whose book is this?的区别 whose is this book?请问它的回答到底是：this book is mine.还是：this is my book. whose is this book 错在哪,为什么 whose is this book 错在哪,为什么 改句 whose story book is this?(复数） whose book is this?,he asked Tom.改间接引语 Whose Frebch book is this?It could be_______(Ali) 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? 特殊疑问句中whose提问的形式是什么?当whose做名词性物主代词时候例句：Whose book is this?可不可以换成 Whose is this book?