It's amazing m_____ are not afraid of cats now.提问

It's amazing m_____ are not afraid of cats now.提问
It's amazing m_____ are not afraid of cats now.提问

It's amazing m_____ are not afraid of cats now.提问
mice(老鼠）

It's amazing mice_____ are not afraid of cats now.
现在老鼠都不怕猫了，真是令人吃惊。

老鼠