问题描述：
补全对话,每空一词.（七年级上册英语练习.）
A：（ ） is Jack?
B：He's my ( ) ,my aunt's son.
A：Who're ( ) girls?
B：( ) are my uncle's daughters.
A：So they are your ( ),too.
B：Yes.
A：（ ） is Jack?
B：He's my ( ) ,my aunt's son.
A：Who're ( ) girls?
B：( ) are my uncle's daughters.
A：So they are your ( ),too.
B：Yes.
问题解答：
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