单选题Jim is a ____ boy &n

问题补充：

单选题Jimisa____boy,andtodayishis_____birthday.A.twelve-years-old, twelveB.twelve-years-old, twelfthC.twelve-year-old, twelveD.twelve-year-old, twelfth

答案：

D解析定语twelve-year-old，表示十二岁的，而twelfth为序数词，故选