I t doesn’t matter if boys play basketball too much instead of watching TV.
A. sixteen-years-old
B. sixteen-year-olds
C. sixteen year old
D. sixteen-year-old
网友回答
A. sixteen-years-old
B. sixteen-year-olds
C. sixteen year old
(答案→)D. sixteen-year-old
解析：考查复合形容词。sixteen-year-old十六岁的，连字符之间的单词用单数，故选D。