71.  Just like Windsor, the blaze happened during restoration work.

72.  Kate lay awake thinking about what had happened.

73.  Male speaker All they ever wanted was not to launch a crusade, but to find out what was happening.

74.  Many things were happening at once, with dizzying speed.

75.  Many years later, but before the tracks were removed, a tragic event happened on the line.

76.  Much of it happened simply because, amid weak democratic structures and lazy press reporting, it could.

77.  My second disaster of the trip happened in the very minute of taking the camper van on to the road.

78.  Naturally, it happened at the worst possible time.

79.  Nevertheless, the theory works well if, using hindsight, one looks back at what has actually happened.