Sheisonlya____girl,butshecanhelphermothe
题型：选择题
问题：
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
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