his father is a teacher.His mother is a teacher,too合并为一句__of his parents__teachers.

问题描述:

his father is a teacher.His mother is a teacher,too合并为一句__of his parents__teachers.

【Both】of his parents【are】teachers.
知识点:【both of】两个都是,固定搭配,谓语动词用复数
翻译:他父母两个都是老师.
祝学业进步!