We have to check up on a few points first.

But instead he says something like "I'll come by in a few days to check up on you."

And it'll be pretty easy to check up on my wife as well.

I wasn't about to call and check up on her.

When we came to check up on them, they were gone.

You show me what you're taking in, so I can check up on your story.

Every reason in the world to check up on things.

Actually I sent my wife to check up on it.

Now, I've just got to check up on one or two points.

He'd decided this was a good time to check up on David again.