--Whose pen is white?为什么回答是--Lily's is 为什么要打is啊?

--whose watch is this ?---【 】,回答为什么不能是this is lucy‘s 而是it is 英语翻译whose white hat is it 为什么不对？ Whose pen is this?It’s _____ (我的).Whose pen is that?It’s ___ Whose is that biouse? Perhaps it is Lily's是什么意思 英语回答Whose shirt is that?那是谁的衬衫?为什么这个whose要加se啊 whose shirt is whilt 为什么不可以who shirt is white A:Whose cat is this?Is it yours?B:Is it a white one?这里为什么用on WHOSE BAG IS IT 为什么不 whose bag it is 为什么是is It(is ) black and white. What is this 是This is a pen.还是.It is a pen?为什么? Do you know( A.is it whose pen B.whose pen is it C.whose pen whose shirt is white?可否用成whose is white shirt? whose is this