问题
选择题
Jack Smith is only a _____ boy, but he can lift such aheavy stone. [ ]
A. 12-years-old
B. 12 years old
C. 12-year-old
D. 12 year old
答案
答案：C
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Jack Smith is only a _____ boy, but he can lift such aheavy stone. [ ]
A. 12-years-old
B. 12 years old
C. 12-year-old
D. 12 year old
答案：C