twelve-year-olds 可以表示年龄吗?是12岁的意思吗？

Twelve-Year-Olds翻译 twelve-year-olds 可以表示年龄吗?是12岁的意思吗？ Craig创办的 the twelve twelve-year-olds怎么翻译 ___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? 选择( )should not be allowed to go out at night.A.Twelve years olds B.Twelve-year-olds为什么不能用A? _____ should not be allowed to go out at night.A.Twelve-years-old B.Tweleve-year C.Twelve year old D.Twelve years olds These （ twelve-year-olds ） should get an education at school rather than do the farm work为什么填这个不填.twelve-year-old 求. fifteen-year-olds是什么意思? seven-year-olds Twelve-year-olds should not (A.allow B.be allow C.allowed D.be allowed)to drive in China. three-year-olds汉语意思 year olds还是years old? sixteen year olds 还是sixteen year old? 写英语句子可以用数字开头么16-year-olds ....... sixteen-year-olds可以直接使用,sixteen-year-old不可以直接使用后面要加boy? （）＿＿＿should not be allowed to go out at night A.Twelve-years-old B.Twelve-year-oldsC.Twelve year old D.Twelve years olds希望能有一个详细的解释、不要太勉强的解释哟.真心不懂这个题(ˇˍˇ） fifteen-year-olds看做单数还是复数?