61.  It happened one day when I ran out of petrol and this girl came along.

62.  It happened one small step at a time.

63.  It happened purely by chance.

64.  It happened to be an Octopus a fisherman had brought Tillman two or three days ago.

65.  It happened to the film industry, which watched the masters of early classics turn to silver nitrate dust.

66.  It just happened that Bobby filled the bill in this case.

67.  It was happening in the faculty.