他在黑暗中摸索着手机，差点把它掉在地上。

He ___fumbled with his phone in the dark and almost dropped it.

他在演讲时紧张地摆弄着翻页器。

He ___fumbled with the clicker nervously during his presentation.

在重要比赛中，他失误没接住那个简单的传球。

He ___fumbled the easy pass during the crucial game.