我的汽车每5000公里就需要保养一次。

My car needs to be ___serviced every 5,000 kilometers.

这家餐厅每周日为至少150位顾客提供服务。

The restaurant ___served at least 150 customers every Sunday.

他们每月按时支付贷款利息。

They regularly ___paid their loan interest every month.