问题描述：
英语选择题This bedroom isn't ( )and ( )is on the second floor.A.Lucy and Lily's,theirs
B.Lucy's and Lily's,theirs
C.Lucy and Lily's,their
D.Lucy's and Lily's,their
B.Lucy's and Lily's,theirs
C.Lucy and Lily's,their
D.Lucy's and Lily's,their
问题解答：
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