问题
选择题
I know the pens are ______. [ ]
A. Kate and Bill
B. Kate and Bill's
C. Kate's and Bill
D. Kate's and Bill's
答案
答案：D
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I know the pens are ______. [ ]
A. Kate and Bill
B. Kate and Bill's
C. Kate's and Bill
D. Kate's and Bill's
答案：D