Sandy is_____years old.His birthday is on the ______of December.(twelve)要理由
问题描述：
Sandy is_____years old.His birthday is on the ______of December.(twelve)要理由
答
Sandy is__twelve___years old. His birthday is on the _twelfth of December.
表达几岁要用基数词twelve,表达具体日期要用序数词twelfth