overhaul|overhauled|overhauling

球场需要彻底检修。

The court needs a complete ___overhaul.

市政府彻底翻修了老旧的公交车站，使其更现代化。

The city government ___overhauled the old bus station to make it more modern.

公司正在彻底改革员工培训体系以提高效率。

The company is ___overhauling its employee training system to improve efficiency.