21.   But now the former Tennessee lawmaker is a hired gun -- and this is the week he must prove his worth.

22.   But Rekimoto says pick-and-drop could prove its worth in any office where people need to exchange files, and for people preparing lectures and presentations.

23.   But the law continues to prove its worth whether it results in a prosecution or a credible exoneration of high public officials.

24.   By the time work on the dictionary was well under way, Americans had more than proved their worth.

25.   Chrysler Corp. vice chairman Robert Lutz said it was now up to traditional dealers to prove their worth.

26.   City officials say that their fire code has proven its worth because, over all, fire deaths are declining.

27.   Criticism aside, landfill mining has yet to prove its worth to the miners themselves.

28.   Despite the needed improvements, MSG will test Super Vision this homestand to prove its worth as a feature that can be paid for through sponsorship.

29.   Despite such initial hitches, Russian engineers are proving their worth, Boeing said.