Question

【题目】I'm ____________,and I have a ________ sister.
A.15 year old ; 16-year-old
B.15 years old ; 16-years-old
C.15-year-old ; 16 years old
D.15 years old ; 16-year-old

Answer 1

【答案】D
【解析】句意：我15岁，有一个16岁的姐姐。表示年龄用数词+years old或者直接用数词；数词-year-old 构成复合形容词，放在名词前作定语，故第二空用16-year-old，切记year不可用复数。故选D。