题目内容
( ) 3. John is only a boy,but he can do lots of housework.
A. ten-years-old B. ten-year-old
C. ten years old D. ten year old
3.B
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( ) 3. John is only a boy,but he can do lots of housework.
A. ten-years-old B. ten-year-old
C. ten years old D. ten year old
3.B
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