问题描述：
IS it yours的回答
有哪些?肯定回答:Yes,it is\Yes,it is mine否定回答,No,it isn't\No,it is not mine,
有哪些?肯定回答:Yes,it is\Yes,it is mine否定回答,No,it isn't\No,it is not mine,
问题解答：
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