我在有氧运动后做一些举重来跟进。

I ___follow ___up aerobic exercise with some weight lifting.

我想跟进这个过程，所以我买了一台放大机。

I wanted to ___follow ___up the process, so I bought an enlarger.

经理将用一份详细报告来跟进这个投诉。

The manager will ___follow ___up the complaint with a detailed report.