Question

【题目】An ______ boy has to cross the river to go to school every day.

A. 11 years oldB. 11-years-oldC. 11-year-oldD. 11 year old

Answer 1

【答案】C

【解析】

句意：一个11岁的男孩每天都要过河去上学。构成复合形容词的名词只能用单数形式，排除B；D的表达是错误的，11 years old只能作表语，不可作定语；11-year-old可以用作定语，故答案为C。