问题描述: my cousin is a ____boy.A.16 years old B.c.16-years-old d.16-year old 1个回答 分类:英语 2014-10-29 问题解答: 我来补答 答案为D.这种句子有这两种常用表达:he_is_a_16-year-old_boy或者he_is_16_years_old,注意16-year-old相当于一个形容词.(手机作答,见谅) 展开全文阅读