他最近过度工作，看起来很疲惫。

He looks exhausted because he has been ___overworking lately.

不要过度使用这台机器，否则会缩短它的寿命。

Don't ___overwork this machine or it will wear out quickly.

她过度修饰了演讲稿，反而让重点变得模糊不清。

She ___overworked the speech draft, making the key points less clear.