灯泡发出微弱的光，昏暗地照亮了整个房间。

The bulb emitted a weak light, ___dully illuminating the entire room.

他无精打采地回答了所有问题，明显对面试不感兴趣。

He answered all the questions ___dully, showing no interest in the interview.

他疲倦地拖着脚步，缓慢地走回家。

He walked home ___dully, dragging his feet in exhaustion.