题目内容
Sam is my friend, he is a _____ boy now.
A. 9 years old B. 9-years-old
C. 9-year-old D. 9-years’ old
练习册系列答案
相关题目
题目内容
Sam is my friend, he is a _____ boy now.
A. 9 years old B. 9-years-old
C. 9-year-old D. 9-years’ old