time keeping in a sentence

Examples

1. We had a very difficult time keeping up with him.
2. "I'm having a hard time keeping up with it ."
3. Suddenly, Rosie magazine was having a hard time keeping up with a changing Rosie.
4. Stores have had a hard time keeping up with demand.
5. We have a hard enough time keeping any horses healthy, let alone our stars.
6. I have a hard time keeping up with Quack Guru.
7. In electromechanical clocks the electricity serves no time keeping function.
8. Even so dissipated a barhopper as Morrison would have a hard time keeping up.
9. It was a hard time keeping my footing out there.
10. Now the scene has changed, and police are having a hard time keeping up.