问题
选择题
" How old is her sister?" "________."[ ]
A. It's ten years old
B. She's ten years old
C. She's ten years' old
D. She is ten year's old
答案
答案：B
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" How old is her sister?" "________."[ ]
A. It's ten years old
B. She's ten years old
C. She's ten years' old
D. She is ten year's old
答案：B