The best-kept secret of the town is the hidden garden behind the old church.

I have always kept up with the Joneses.

The best-kept secrets of the city are its hidden gardens.

He kept the ball rolling during the meeting.

He kept a low profile during the investigation.

She kept the pot boiling on the stove.

He kept the show on the road.

I kept an eye out for any suspicious activity.

I kept an eye peeled for any signs of danger.

He kept a look-out for any signs of danger.