21.  A convention of about thirteen blue jays flew over, chattering and making all sorts of weird calls.

22.  A crowd of onlookers had gathered to see what all the fuss was about.

23.  A crowd of reporters were waiting outside the house all night.

24.  A crucial point about epidemics is that not all members of a given population behave in a uniform way.

25.  A Decade from now we might, as you suggest, be wondering what all the fuss was about.

26.  A diverse family of warm-blooded mammals whose grace and beauty are well-known and appreciated across all five continents.

27.  A dried cornflower ... How on earth did all this rubbish get into the file?

28.  A family systems approach to work with minority groups must take account of all these factors.