这些饼干放得太久了，已经不脆了。

These cookies have gone ___stale because they were left out too long.

这个电视节目的套路太老套了，观众都看腻了。

The TV show's formula has become ___stale, and the audience is tired of it.

长时间没参加比赛后，这位足球运动员在场上显得状态不佳。

The soccer player appeared ___stale on the field after not playing for a long time.