"We have to be kept happy on this crazy island."

The man who is putting up the money has got to be kept happy.

But the client needed to be kept happy, in this particular case.

This is a resort town and the visitors have to be kept happy.

The history records have kept me happy all this day and are good for many another.

Citizens must be kept happy to prevent them from leaving the town.

This was Hollywood, and the star system means that stars must be kept happy.

But we were pleased for him to be kept happy and amused.

He was just this day sixteen years old, and trying to keep three women happy.

So obviously, having us at their mercy, they must be kept happy.