11.   Builders acknowledge past problems, but say the market is so competitive that poor-performing companies have been pushed out and overall quality has improved.

12.   Bush has even boasted that air quality had improved during his tenure.

13.   But if the goal of no defects is set from the start, people will work toward that goal and quality will improve.

14.   But now the quality is improving and the chips are starting to advance into mainstream products.

15.   But Lauria, of the Tobacco Institute, contended air quality may not improve.

16.   But the pilots that it and UPN have made available reveal networks whose quality is improving at least as quickly as Fox did a decade ago.

17.   But will the quality of play improve as contracts grow fatter?

18.   Can quality of design improve the quality of life?

19.   Car makers worry that unless air quality improves they will be ordered to meet yet stricter design standards.

20.   Clearly, the quality was improving as well.