He is __,and he has__sister.A.ten years old,an eight-year-old B.ten-year-old,eight year old

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He is __,and he has__sister.A.ten years old,an eight-year-old B.ten-year-old,eight year old

He is __,and he has__sister.A.ten years old,an eight-year-old B.ten-year-old,eight year old
He is __,and he has__sister.A.ten years old,an eight-year-old B.ten-year-old,eight year old

He is __,and he has__sister.A.ten years old,an eight-year-old B.ten-year-old,eight year old
A.ten years old,an eight-year-old
有连字符的话,就不用复数了.

A

A
他十岁,有一个八岁的妹妹
前面ten years old和ten-year-old均可,eight-year-old为形容词,修饰sister

选A

选A

A “几岁了”说成”...years old”,而“几岁的”说成“ ...-year-old ”,要用连字符号。