Question

—We’ll be back for our school’s        anniversary ceremony.
—I see. That means you'll have a get-together with your classmates in        years.

A．fifteen; seven	B．fifteenth; seven
C．fifteen; seventh	D．fifteenth; seventh

Answer 1

B

解析试题分析：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。
考点：考查数词的用法。