You three had better keep going and I'll catch up later.
She agreed, but thought she'd better keep that to herself for now.
The rock was cold and he had better keep moving.
You two girls had better keep away from that part of the world while they're about.
I'd better keep this going, now that I finally have their attention.
But right now, she had better keep her own mind on the job at hand.
He said you'd better keep the car there in case his won't be ready or something.
The language of art may be the best way we have to let people know that this is bad stuff, and they'd better keep away.
You'd better keep your eyes open from now on, night and day, because I'm coming after you.
"But we had better keep you around for a while just to be sure."