EXAMPLES FROM THE WEB FOR KEEP UP
Our hero, though strong-armed, had hard work to keep up with him.
Besides, it was not very substantial, and failed to keep up their wonted strength.
And yet he had small occasion to keep up on the bit as he rode her.
It was as much as the little fellow could do to keep up with his friend.
You're here to keep up our sales and increase them if you can.
She loved him so much that she could not keep up this pretence of strength!
Keep up the price of iron with peace if you can, but keep it up at any rate.'
What we've got to do is, to keep up our spirits, and be neighbourly.
How could one keep up such a big place, and what, too, would be the use of it?
But the supply could not keep up with the insatiable demand.