61.   But Clottes said there were many unanswered questions.

62.   But despite these unanswered questions, tax preparers urge taxpayers and deal makers not to delay until the last minute.

63.   But even researchers who strongly believe that marijuana has a medical benefit agree that there are still unanswered questions about its use.

64.   But George Nichols, stock analyst for Morningstar.com, said there are many unanswered questions about both Duet and MusicNet.

65.   But he died unexpectedly shortly after the interim board was named last fall, turning unanswered questions about how he selected the members into something of an Internet mystery.

66.   But how those costs are allocated among ratepayers, utilities and generators, and whether the bond issue can even succeed, remain unanswered questions.

67.   But in the season and a half since, there has been nothing but frustration and unanswered questions.

68.   But John Riojas, with the International Brotherhood of Teamsters, said these unanswered questions are precisely the reason enactment of the NAFTA provision should be delayed.

69.   But in clambering across the scree of Rocky Mountain history, the series sets off a cascade of unanswered questions.

70.   But now we have a lot of unanswered questions.