51.   The doors opened, and everyone crowded in.

52.   As soon as the train drew in and the doors opened, a mass of commuters flooded the station.

53.   Then the door opened, letting in a cold damp gust of wind.

54.   Patio doors opened onto a sun lit garden.

55.   The doors opened automatically as we approached.

56.   The door opens outwards.

57.   The door opened with a groan.

58.   The church doors would open and the crowd would surge out.

59.   The door opened onto a lighted hallway.

60.   The top door opened outwards.