消防员迅速采取行动扑灭了大火。

The firefighters took ___action quickly to put out the fire.

现在是行动的时候了，不要只是等待。

It's time for ___action, not just waiting.

我们必须在情况进一步恶化之前采取行动。

We must take ___action before the situation deteriorates further.