问题描述：
english小学 说明理由 200分悬赏
Nancy's.
A.is it;It's
B.are these ;They're
C.is this; This is
D.are they ; Are they
Nancy's.
A.is it;It's
B.are these ;They're
C.is this; This is
D.are they ; Are they
问题解答：
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