61.  Close all doors and lock them when you go out.

62.  The same goes for windows.

63.  Close the door, if you please.

64.  Would you be kind enough to close the door, please?

65.  Please keep the doors closed while the train is moving.

66.  I walked out and closed the door behind me.

67.  We never close the door on a successful series.

68.  ...decisions taken in secret behind closed doors.

69.  She went in and closed the door.

70.  She always closed the door softly out of habit.