21.   Even though the problem is obvious, the solutions are not.

22.   For Nina Liebermann, solution was a chance acquaintance with a wealthy businessman.

23.   His solution was to come up with the first table of annual premiums based on life expectancy.

24.   His solution would have been unthinkable in classical times.

25.   If neither solution is practical, try burning a joss-stick or invest in a large aerosol spray.

26.   If there are no active nodes left, the problem is solved and the incumbent solution is optimal.

27.   In cases like this, the solution is to choose for teaching the words most likely to be needed by your pupils.

28.   In many instances nutrition is the solution and eliminating animal fat from the diet restores the gall bladder to balance.