问题
选择题
If parents leave their children on own, do you think the home is tidy or untidy when they return? [ ]
A. they
B. them
C. theirs
D. their
答案
答案：D
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If parents leave their children on own, do you think the home is tidy or untidy when they return? [ ]
A. they
B. them
C. theirs
D. their
答案：D