问题描述：
这个英语对话的正确答案是?
---Whose sweater is this
---It's __________.
A.my sister's,Jenny's B.my sister's Jenny C.my sister,Jenny's
D.my sister,Jenny
---Whose sweater is this
---It's __________.
A.my sister's,Jenny's B.my sister's Jenny C.my sister,Jenny's
D.my sister,Jenny
问题解答：
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