他在公司工作了15年，现在是资深工程师。

After 15 years with the company, he is now a ___senior engineer.

这家公园为老年人提供免费入场。

This park offers free admission for ___senior visitors.

她作为高年级学生，正在准备大学入学考试。

As a ___senior, she is preparing for her college entrance exams.

老威廉·约翰逊和他的儿子在同一条街上经营着两家餐厅。

William Johnson ___Senior and his son run two restaurants on the same street.