什么是手机流量:看问题补充说明

来源:百度文库 编辑:中科新闻网 时间:2024/04/29 18:10:47
She is only a ( )girl.
A.six year old B.six-year-old C six years old D.six-years-old

B
six-year-old 是合成词,是形容词

b