颁奖典礼上，许多座位填充者被安排在空位上以保证观众席座无虚席。

Many ___seat-fillers were placed in empty spots at the awards ceremony to ensure the audience appeared full.

音乐会组织者请了一些临时观众来填补空位。

The concert organizers hired ___seat-fillers to occupy the empty spots.