time keeping in a sentence

Examples

1. The advance came so quickly that supply units had a hard time keeping up.
2. Can she outwit this master criminal while at the same time keeping herself safe?
3. No wonder that the small caps have had such a hard time keeping up.
4. You end up spen $ ing all your time keeping the gadgets running right.
5. Once restored, he had a difficult time keeping one.
6. She also seemed to be having a real tough time keeping her tube top on.
7. Understandably, men are having a hard time keeping up.
8. But the lies begin to unravel and Hari has a tough time keeping his girl.
9. Radio Shack has had a tough time keeping its ZipZap remote control cars in stock.
10. We have a hard time keeping up with them.