Beacuse Mario wants to be an animal doctor.And Mary wants to help kids learn to read. Mario believes it can help him to get his future dream job. And Mary can do what she loves to do. 希望可以帮到你,祝你学习进步! 再问: 谢谢,有帮到我! 再问: 谢谢,有帮到我! 再答: 不客气,有疑问,请继续追问。如果满意,请点赞。谢谢支持!祝你学习进步!