他重重地把钥匙扔在桌上。

He ___plunked the keys down on the table.

他随意拨弄了几下吉他琴弦，弹出几个随意的音符。

He ___plunked a few random notes on the guitar strings.

硬币从口袋里掉出来，啪嗒一声落在地上。

The coin fell out of the pocket and ___plunked onto the floor.

石头扑通一声沉闷地落入水中。

The stone ___plunked into the water with a dull sound.