21.   Apart from the absence of tracks, there are big gaps in the accommodation market.

22.   Even then there can still be a gap between the combined school and the high school.

23.   It became more difficult to decide what total quality might amount to if there were optional gaps in what was being provided.

24.   It is they who must first work out whether there is a gap between theory and their own activities.

25.   If the paper is moved upwards by exactly inch before the next line of eight-bit bytes is printed then there will be no gap between the lines.

26.   Short gaps are thus more probable than long ones.

27.   He reads the Koran, he attends daily prayers, and occasionally, when there is a gap in the conversation, he babbles of going to Mecca.

28.   There are no gaps in the information.

29.   Here and there were gaps in the line where houses had collapsed completely.

30.   There was a gap in the lower part of the wall big enough for a boy, hardly big enough for a man to squeeze through.