a thirteen-year-old boy=什么?

I'm a --- girl ,A.thirteen years old B.thirteen-years-oldC.thirteen year old D.thirteen-year-old tom is a___boy.A.thirteen years old B.thirteen-years-old C.thirteen-year-old tom is a___boy.A.thirteen years old B.thirteen-years-old C.thirteen-year-old a thirteen-year-old boy的中文翻译 a thirteen-year-old boy=什么? We're talkin to Alan,a thirteen-year old boy. Li Lida a____boy crossed the Qiongzhou Channel in June 2000.选择什么?为什么?a.thirteen-year-old b.thirteen-years-oldc.thirteen years oldd.thirteen-years old thirteen years old与thirteen-year-old的区别 They are ( ) students.A.thirteen years old B.thirteen-year oldC.thirteen-year-old D.thirteen-years-old求讲解部分.几个单词中的-有没有有什么区别.year 在什么情况下加S Deenie is about a thirteen-year-old girl.中的year为什么不用加s? tonight we are __to a thirteen-year-old boy.A.telling B.saying C.talking i'm a -----------girl 初一英语一道 i'm a ----------------------------girlA .thirteen years old B .已排除 省略C .已排除 省略D .thirteen-year-old要有原因撒 thirteen years old 与 thirteen -year-old的区别快昂,.明天要试讲 Ben is a _______ student A．twelve years oldB．eight-year-oldC．thirteen-year-oldD．eleven year old We are talking to Alan,a thirteen-year-old boy.对Alan,a thirteen-year-old boy.这句话提问.谢谢啦!明天就要用了，今天晚上要写好，大家帮帮忙吧！ 英语选词适当形式填空Bill was a thirteen-year-old schoolboy in the seventh grade. we are ___students.1.thirteen years old 2.thirteen-year-old选哪一个,主要是第一个为什么不对? I am thirteen years old this year.(用two years ago代替this year)