突然，我们听到一声雷鸣，所有人都猛地站了起来。

Suddenly, we heard a clap of thunder and all of us ___sprang to our feet.

那只猫突然跳到沙发上，去抓那个玩具。

The cat ___sprang onto the sofa to catch the toy.

当我松开被压缩的弹簧时，它猛地弹回了原状。

When I released the compressed spring, it ___sprang back to its original shape.