加入业余戏剧社是我做过的最棒的决定。

Joining the amateur dramatic ___society was the best decision I ever made.

许多城市都有一个旨在保护和研究当地野生动物的动物学协会。

Many cities have a zoological ___society that protects and studies local wildlife.

当地的骑马协会为马术爱好者组织精彩的活动。

The local riding ___society organizes wonderful events for equestrian enthusiasts.