They ran so fast I could hardly keep up.
I always try to keep up with (or keep up on) current affairs.
The NRA is pumping groundwater into the River Itchen in Hampshire to keep up its flow and is trying to save three streams, the Tong, the Little Stour and the Dour from going dry this summer.
If the borrower could no longer afford to keep up the payments, the longer he stayed in the home the more the interest bill mounted.''.