—We’ll be back for our school’s anniversary ceremony. —I see. That means youll have a get

问题补充：

—We’ll be back for our school’s anniversary ceremony.

—I see. That means youll have a get-together with your classmates in years.

A. fifteen; seven

B. fifteenth; seven

C. fifteen; seventh

D. fifteenth; seventh

答案：

A. fifteen; seven

(答案→)B. fifteenth; seven

C. fifteen; seventh

D. fifteenth; seventh

解析：句意：--我们将返校参加十五周年的庆典.-----我明白。那就意味着你们将在分别七年后与同学们再次聚会。学校十五周年庆典，即“第十五个周年庆典”，所以第一空应用序数词；第二空“七年后”用基数词，故选B项。