奥巴马政府实施了重大的医疗改革。

The ___Obama administration implemented significant healthcare reforms.

现任政府正在应对复杂的外交政策挑战。

The current ___administration is dealing with complex foreign policy challenges.

新任市长的政府一直致力于改善公共交通。

The new mayor's ___administration has focused on improving public transportation.