1.   Increasingly, researchers have attempted to conceptualize speaker variables in such a way as to solve a widening range of substantive problems.

2.   The most substantive problem, which advocates try to hide, is that the flat tax is a sop to the rich.

3.   Balanced budget and term limit mandates impose an unnecessary procedural straitjacket on the political process and do not address the substantive problems of government.

4.   Bill Clinton has a substantive problem.

5.   But what about the substantive problems?

6.   Even with diplomatic support, Iraq will have substantive problems getting clearance in both programs.

7.   Partition would also result in a more substantive problem than embarrassment for the Clinton administration.

8.   There are substantive problems with both arguments.

9.   They also argued that a dirty system can cause more substantive problems, as when litter fuels track fires.

10.   Even if the machinery is rebuilt and re-oiled, though, there will be substantive problems with the immigration system.