whose MP3 is this?-----it's ____ ____is in my bag.A joy's;Mine B joy's;My C joys;Me为什么要选择A .理由?

Whose book is this? Whose ruler is this? whose is this book? “Whose room is this? Whose hat is this? whose spanner is this 翻译 whose sweater is this是什么意思 Whose game is this?中文 whose money is (this,these)? Whose is this book ?对吗? whose home is this翻译 this,whose,toy,is,bear(?) whose home is this?翻译 Whose computer is this.[同义] whose pants is this 改错 whose french book is this? Whose is this bike?Is( )( ),Jake whose bag is this 为什么这里用whose