11.   And the focus needs to be, above all, on what happens in the classroom.

12.   Anyway, has anything really new happened in fashion since the mini-skirt?

13.   As always happens in Great Groups, people had enormous amounts of fun.

14.   As had happened in previous nuclear accidents, the operators misread the situation.

15.   As often happens in summer, a climatic miracle occurred.

16.   Assuming that this happened in your area, how would you use your increased leisure time?

17.   Assuming the same thing happens in the gut, then a vitamin deficiency might make the yeast convert to the hyphal form.

18.   Both pile-ups happened in freezing fog.

19.   But no one seemed to anticipate what has happened in the last two years.