I went around and made sure all the windows were locked.

"Then go about and make sure that all the windows are locked."

He found that the closed window on the other side of the building was not locked.

The kitchen door and windows on the first floor were all locked.

When I'd left my apartment the window had been closed and locked.

All the windows were locked already; she had done that earlier.

"I had personally seen to it that every door and window in the house was locked."

All the windows were either barred or locked on the inside.

In the middle of the night I got up to check that the doors and windows were locked.

My window was still closed and locked, the curtains half open.