11.   There is a gap again because I stopped work, suddenly aware that an alien indignation was invading my soul.

12.   There were gaps between the floorboards where dust and bits of grime had gathered.

13.   Thunder exploded, roll after roll after roll, so that there seemed to be no gap between but only an incessant bombardment.

14.   Where there are gaps in matching up goals to resources, what can you do about it?

15.   While these general observations about the ageing process can be made, there are extensive gaps in our knowledge about ageing.

16.   As you will have noticed, there are some gaps in the data.

17.   Overlap the slices carefully so there are no gaps.

18.   There are unexplained gaps in his story.

19.   So there were big gaps in the department.

20.   Since most men joined the army, there were large gaps in the workforces of industries at home.