21.  It represents the launch of an ambitious effort to reform the state health care system from top to bottom.

22.  Kellogg Co. is extending ambitious efforts to change consumer perceptions that the prices of its cereals are as high as the corn in Kansas in August.

23.  Last week, Republicans said the ambitious effort failed because Clinton and the Democratic leadership refused to consult them in devising a plan.

24.  Last week, Time Warner Inc. announced it would shut down Pathfinder, its ambitious effort to establish the first great Internet portal.

25.  Ms. Mitchell is at the center of an ambitious effort by the Giuliani administration to limit its obligation to provide health care for millions of poor New Yorkers.

26.  Not since Three Mile Island has there been such an ambitious effort to turn around a troubled nuclear plant, many industry experts say.

27.  One ambitious effort from Delrina Software is a CD called Echo Lake.

28.  Producer of prosaic household appliances is undertaking an ambitious effort to carve out a succulent slice of the lucrative market for higher-priced kitchen gadgets.

29.  Public policy experts said the legislation was the most ambitious effort yet by a state government to rely on free enterprise for economic revival in targeted areas.

30.  Robins is leading an ambitious effort to revitalize the formerly woebegone district, once plagued by muggings and burglaries.