-( )bag is it ? -It's Sam 's 是用Who 还是Whose

WHOSE BAG IS IT 为什么不 whose bag it is Is it he bag 改错 it is my bag.对my bag提问 是.This is bag.还是It ia bag. ( ) is the bag?It's yellow. what bag is it?错在哪里 Is it in the yellow bag? Whoes bag is it?的中文? Is it a bag?作否定回答 What is this in english?A This is a bag B It is bag C It is a bag 为什么 it is a bag划线提问bag的话,能用what's it where is my bag?Maybe it is什么the door what is this it is bag.这样对吗 Is it ken is blue bag?(做否定回答） bag it 如题 什么是It Bag? What's this in English?A.This is a bag.B.It is bag.C.It's a bag.D.That's a bag. This bag is her.Whose bag is that?It is____(我的）