It fifteen years since I to schoolA.was,come B.is,came C.is,have come D.was,have comeIt后面和I后面有空

It was stolen twenty years ago whenIt was stolen twenty years ago when dan was a boy of fifteen. It ( )about fifteen years since he ( )his hometown.答案是is:left 可是since不是应该用现在完成时么? You are fifteen years old.I am fifteen years old,too.(同义句)____ ____ ____are fifteen years old. I am fifteen years old this__ I have been ()teapots for fifteen years are you ___ fifteen years old? He is_______old.A.fifteen B.fifteen year C.fifteen years D.fifteenthhng it‘s about fifteen years since they got married跟they have been married for about fifteen years两者有区别吗?可如果翻译的话......那不是跟后者不相同了吗? It is six fifteen是什么意思? Amy is fifteen years old .Millie is fifteen years old同义句 Tom is fifteen years old.Mary is fifteen years old,too(改为同意句） Tom studies at our school.He is a ________ boy.A.fifteen-year-old B.fifteen-years-old C.fifteen year old D.fifteen years old It's the boy's ___birthday today.He is five years old now.A.fifteen B.fifth C.five D.fifteenth it __ about fifteen years since he __ his hometownA.is;leftB.has been;leaves为什么有since的时候不用完成时 It fifteen years since I to schoolA.was,come B.is,came C.is,have come D.was,have comeIt后面和I后面有空 fifteen-years-old的用法与区别fifteen year old ,fifteen years old,fifteen-year-old,fifteen-years-old,语法上分别有什么区别,分别怎么用,最好有例句 fifteen-year-old 和fifteen years old 有什么区别?包括他们各自的用法 Tom you're only_.I don't think a _boy should be allowed to drive alone.A.fifteen-year-old;fifteen-year-oldB.fifteen years old;fifteen-year-oldC.fifteen years old;fifteen years oldD.fifteen-year-old;fifteen years old正确答案:B求原因,要详细