夜幕降临，他失控的想象力幻想出各种可怕的场景。

As night fell, his ___run ___wild imagination conjured up all sorts of scary scenarios.

独自待在那座老宅里，她的思绪开始不受控制地想着隐藏的鬼魂和秘密。

Left alone in the old mansion, her ___run ___wild with thoughts of hidden ghosts and secrets.

没有任何事实依据，她任由自己对可能发生的事胡思乱想。

Without any facts to anchor her, she let her ___run ___wild about what might have happened.