问题
选择题
Lucy , a _______ girl , helped the little boy find his parents. [ ]
A. twelve year old
B. twelve years old
C. twelve-year-old
D. twelve-years-old
答案
答案：C
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Lucy , a _______ girl , helped the little boy find his parents. [ ]
A. twelve year old
B. twelve years old
C. twelve-year-old
D. twelve-years-old
答案：C