Hints:


I can shut my eyes but I will not go to sleep.
Hello!
Sorry, we're a little late.
Oh, no trouble at all.
He's been lots of fun.
But I think he's tired himself right out.
Congratulations, I can never get him to take a nap.
It's not anything we did, he just wore himself out.
Well, thank you for taking care of him today.
We had fun.
Look at what we made!
Mm-Hmm, it's a fine piece of engineering.
He's such a good little cub.
And so creative.