他捂住胸口，开始大口喘气。

He clutched his heart and began to ___gasp for breath.

比赛结束后，筋疲力尽的跑者们躺在跑道上，大口喘着气。

After the race, the exhausted runners lay on the track, ___gasping for air.

哮喘发作让她无法控制地大口喘气。

The asthma attack caused her to ___gasp uncontrollably.