温度骤降，气温一下子下降了10度。

The temperature ___plunged by 10 degrees suddenly.

孩子们兴奋地从跳板上跳入泳池。

The kids excitedly ___plunged into the pool from the diving board.

他迅速把钥匙插进了锁孔里。

He ___plunged the key into the keyhole quickly.

她一回到家就迫不及待地投入到新项目中。

She ___plunged into her new project as soon as she got home.

突如其来的停电使整个城市陷入黑暗。

The sudden power outage ___plunged the entire city into darkness.