51.   But senior alliance officials continue to give mixed signals about where an attack could occur.

52.   But the number keeps rising as U.S. military and intelligence officials continue interviewing thousands of prisoners held by anti-Taliban militias.

53.   But the new money has languished in city coffers for months, as officials continue to deliberate on how to spend it.

54.   But top U.S. officials continue focusing on the border issue.

55.   But White House officials continue pressing Congress to approve the change.

56.   But White House officials continued to criticize many elements of the Senate bill.

57.   But while administration officials continue to debate how to sell the idea to China, there is little doubt that the research will go ahead.

58.   By Saturday afternoon, no compromise was in sight, but officials continued to try.

59.   But wildlife officials may continue to try to capture the animals after May, said Brian Gorman, a Fisheries Service spokesman.

60.   City officials continue to assure Denver voters that the project remains sound.