问题
选择题
She is only a ____ girl, but she can help her mother do much housework on Sundays. [ ]
A. ten years old
B. ten-year-old
C. ten-years-old
D. ten years-old
答案
答案：B
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She is only a ____ girl, but she can help her mother do much housework on Sundays. [ ]
A. ten years old
B. ten-year-old
C. ten-years-old
D. ten years-old
答案：B