问题
选择题
Jim is a ____ boy, and today is his _____ birthday.
A.twelve-years-old, twelve
B.twelve-years-old, twelfth
C.twelve-year-old, twelve
D.twelve-year-old, twelfth
答案
答案:D
定语twelve-year-old,表示十二岁的,而twelfth为序数词,故选答案为D