问题
选择题
My ____ grandfather swam with us in the sea. [ ]
A. 83 year olds
B. 83 year old
C. 83-year-old
D. 83-years-old
答案
答案：C
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My ____ grandfather swam with us in the sea. [ ]
A. 83 year olds
B. 83 year old
C. 83-year-old
D. 83-years-old
答案：C