当他看到意外结果时，他惊讶地倒吸一口气。

He ___gasped in surprise when he saw the unexpected results.

观众对魔术师的戏法惊叹得倒吸一口气。

The audience ___gasped with amazement at the magician's trick.

听到这个令人震惊的消息，她忍不住倒吸一口气。

Upon hearing the shocking news, she couldn't help but ___gasp.