问题
选择题
Tony is twelve old, but his sister is only one old.
A．year; year
B．years; years
C．years; year
D．year; years
答案
答案：C
表示“年龄多大”时用“…years01d”结构。前面的基数词是one就用year old：大于1就用years old。因此选c。
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