twelve -year-old girl 改成不用连字符的怎么写

‘I am twelve year old.'怎么改错 Tony is twelve ( )old.year years ,Tony is twelve ( )old.year years ,包括语法, Lucy and Lily are both ________ girls．A.twelve years old B.twelve year old C.twelve-years-old D.twelve-year-old twelve years old twelve year old twelve—years—old twelve—year—old 有什么区别twelve years oldtwelve year oldtwelve—years—oldtwelve—year—old有什么区别 twelve-year-old与twelve years old的区别及用法 a twelve-year-old和 twelve years old有区别吗?如果有是什么区别 Tony is twelve years old.（对划线部分提问）划线部分twelve year old ___should not be allowed to go out at night.a.Twelve-years-old b.Twelve-year-olds c.Twelve-year-old d.Twelve-years-olds ____should not be alowed to go out at night.A.Twelve-years old B.Twelve-year-olds C.Twelve year old D.Twelve years olds选什么 为什么? twelve years old词性My brother is__________this year中,应填twelve years old还是twelve-year-old,为什麽? _____ should not be allowed to go out at night.A.Twelve-years-old B.Tweleve-year C.Twelve year old D.Twelve years olds 我十二岁 I twelve year old 为什么书上是I am twelve我十二岁 I twelve year old 为什么书上是I am twelve year old 为什么加am(是) I'm a twelve year old girl.改为同义句 I'm twelve_____I'm a twelve year old girl.改为同义句 I'm twelve______ _______. I was in class three last year.And now I am twelve years old. Tom was a twelve-year-old boy.he was not a good student. He is twelve years --------- this year.A old B young C / Tony is a 12-year-old boy.Today is his _______(twelve)birthday 快 十二岁的能否译为twelve-year-old是十二岁的，而不是十二岁！