21.   Dave was very successful in business, but always had problems in his personal relationships.

22.   Do not start a programme of strenuous exercise if you have any heart problems.

23.   Dominic has always had medical problems.

24.   Dorothy and I love the city, although our children have quite honestly had some problems.

25.   Even the most gifted editor would have problems turning much of the obligatory information into riveting reading.

26.   Even within its own terms of reference, the positivist approach has problems.

27.   Fred has some problems in the humor department.

28.   Gianni has problems with his grammar but his pronunciation is very good.