1、The police will follow up all possible leads.警方将追踪所有可能有用的线索。
2、They follow up their March show with four UK dates next month.他们在三月演出以后，就是下个月在英国的四场演出。
3、John then unlocked the front door and I started to follow him up the stairs.约翰接着打开前门，我开始跟他上楼。
