这座图书馆正在筹备百年庆典活动。

The library is preparing for its ___centennial celebration.

这座城市的百年庆典吸引了成千上万的游客。

The city's ___centennial celebration drew thousands of visitors.

我们社区有位百岁老人上周刚过完生日。

There is a ___centennial in our neighborhood who just celebrated her birthday last week.