Is this book in your schoolbag?(改为肯定句）为什么不把YOUR改为MY

改错：is this book your? This is ( ) book.your|yours Is this your m( )book Is this book in your schoolbag?(改为肯定句）为什么不把YOUR改为MY P____ your book is in your bag. Is this your book No __(I) is in my bag _____me,is this your book,Tom? Is this your book ? 变为复数句 Is this your book?的肯定回答 is this your book?(肯定回答) Is this your book 怎样回答 is this your book?的同义句 Is this your book 改成同义句 Is this your book?( ),it's( ) is this your book?聊英语 This book is ( )? 填Your还是Yours? 写出下列句子的复数形式this is my book.is that your sister?that is my baseball.is this your friend?what's this in english? Is there a maths book in your