1.   Money problems often lead to marital breakups.

2.   These problems have led to the proposal of a new law.

3.   The dog dirt problem has led to fears for the health of pupils.

4.   Both these problems led to a growing backlog of people working at the White House without permanent passes.

5.   But the problems need not lead to world recession, let alone depression.

6.   But this spring, one problem led to another.

7.   Environmentalists have been claiming for years that environmental problems often lead to conflict.

8.   Eye problems can also lead to other more disabling injuries, such as carpal tunnel syndrome.

9.   Fertility problems led them to consider adoption.

10.   For many commuters in Connecticut and Westchester County, N.Y., the problems led to frantic dashes for cabs and several other solutions.