Question

【题目】I think ________ should help their parents do some chores at home.

A.fifteen-year-oldsB.fifteen-year-oldC.fifteen years old

Answer 1

【答案】A

【解析】

句意：我认为十五岁的孩子应该帮助他们的父母在家里做一些家务。

考查年龄的表达。fifteen-year-olds十五岁的孩子，名词；fifteen-year-old十五岁的，在句中作定语；fifteen years old十五岁，在句中作表语。根据题干可知从句中缺少主语，用“基数词-year-olds”表示“……岁的孩子”。故选A。