问题
选择题
| Although Steven is a _____ boy. He knows a lot of Chinese characters. |
A. six years old B. six-years-old C. six-year-old D. six-year-olds |
答案
答案：C
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| Although Steven is a _____ boy. He knows a lot of Chinese characters. |
A. six years old B. six-years-old C. six-year-old D. six-year-olds |
答案：C