问题
选择题
–We ‘ll be back for our school’s _____anniversary (周年) ceremony .
-I see. That means you’ll have a get-together with your classmates in ____years .
A．twelve; seven
B．twelfth; seven
C．twelve seventh
D．twelfth; seventh
答案
答案：B
基数词和序数词的基本用法，第几周年常用序数词。