他坐在窗边，闷闷不乐地想着自己被拒绝的那份工作。

He sat by the window, ___brooding over the job offer he was rejected for.

鸭妈妈带着她的一群小鸭子在池塘里游过。

The duck swam by the pond with her ___brood of ducklings.

母鸡正在窝里孵蛋。

The hen is ___brooding on her eggs in the nest.