他们在派对上互相开玩笑，气氛轻松愉快。

They were ___bantering with each other at the party, creating a lighthearted atmosphere.

他们一边喝咖啡一边互相开玩笑，气氛轻松愉快。

They were ___bantering over coffee, teasing each other in a lighthearted way.