问题描述：
uncle jack如下
uncle jack is ( )
a.my father and mother's friend
b.my father and my mother's friend
c.a friend of me
d.a friend of my mother's and father's
可以告诉我bd为什么错了吗?
uncle jack is ( )
a.my father and mother's friend
b.my father and my mother's friend
c.a friend of me
d.a friend of my mother's and father's
可以告诉我bd为什么错了吗?
问题解答：
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