问题描述：
（）school is big,but（）is small.A.Our；theirB.Our；theirsC.Ours；their
（）school is big,but（）is small.
A.Our；their
B.Our；theirs
C.Ours；their
快点!
（）school is big,but（）is small.
A.Our；their
B.Our；theirs
C.Ours；their
快点!
问题解答：
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