He is_______old.A.fifteen B.fifteen year C.fifteen years D.f

fifteen-year-olds和a fifteen-year-old boy He'd like to have a chance to live abroad in fifteen years s 英语问题a fifteen-year-old与a fifteen-years-old等到底有什么区别呢?我一直都没搞懂, 选择 Today is my _____birthday. A.fiveteen B.fifteen C.fifteen fifteen-year-olds是什么意思? fifteen-year-old 和fifteen years old 有什么区别?包括他们各自的用法 our house is fifteen miles the ocean A at B from C away D be seven and eight [ ] fifteen A is B be C am D is it's fifteen miles the village.a.until b.to c.from d.before 单项选择：What does Tony do?--——A.He is fifteen years old.B.He is he's a fifteen-year-old boy.[改为同义句 he’a boy 英语翻译Henry is a fifteen-year-old boy .He studies in a middle