this is a photo of ____when they were youngA.my father and motherB.my father's and my mother's在线等
问题描述:
this is a photo of ____when they were young
A.my father and mother
B.my father's and my mother's
在线等
答
选A.my father and mother
of是物主代词,而‘s也是物主代词.重复了.