Whose bag is this?怎么答?

Whose bag is this?怎么答? whose is this bag?和 whose bag is this? whose bag is this?翻译成中文 _______ this?A Whose is bag B Whose bag is C Who's bag D Who whose bag is this 为什么这里用whose 如果按This is my bag.改写成This bag is mine."whose shirt is this?" Whose bag is this?（改为同义句） This bag is her.Whose bag is that?It is____(我的） Is this your eraser?(同义句转换） Whose is this bag?(改为复数句） WHOSE BAG IS IT 为什么不 whose bag it is Who bag is that?Whose is that girl?This book is mine book.Th Whose glasses is this?怎么改