父亲愤怒地用棍子抽打那棵不结果的树。

The father angrily ___thrashed the fruitless tree with a stick.

那只受伤的小鸟在笼子里痛苦地扑腾着。

The injured bird ___thrashed around in the cage in pain.

他们在辩论赛中完全击败了对手。

They completely ___thrashed the opponents in the debate tournament.

团队花了整个下午热烈讨论这个项目的可行性。

The team spent the whole afternoon ___thrashing out the feasibility of the project.