由于缺乏锻炼，他的肌肉开始变得松弛无力。

Without regular exercise, his muscles began to ___languish.

那位老人在医院里孤独地受苦，没有家人探望。

The old man ___languished alone in the hospital with no family visits.

这个项目因为缺乏资金而被搁置了两年。

The project has been ___languishing for two years due to lack of funding.