我们听到一只乌鸦在树上发出沙哑的叫声。

We heard a raven ___croaking hoarsely in the tree.

我那台老电脑终于在今天早上彻底报废了。

My old computer finally ___croaked this morning after years of use.

他感冒了，只能嘶哑地低声说话。

He had a cold and could only ___croak a few words.