这家超市为老年人提供专属折扣。

This supermarket offers special discounts for ___senior customers.

他在公司工作了15年，现在是资深的项目经理。

He has worked for the company for 15 years and is now a ___senior project manager.

作为高中毕业班学生，她正在准备大学入学考试。

As a ___senior in high school, she is preparing for college entrance exams.