他坐在办公桌前，聚精会神地工作。

He sits at his desk and ___works attentively.

他每天工作八小时，非常努力。

He ___works eight hours a day and is very diligent.

我的手机突然不工作了，我得找人修修。

My phone suddenly stopped ___working, so I need to get it fixed.

他在一家医院工作，是一名医生。

He ___works at a hospital as a doctor.

陶艺家正在用手将黏土塑造成一个花瓶。

The potter ___works the clay with his hands to shape a vase.