81.   But a half-century after his original publication, questions remain.

82.   But even if Federal programs pass the legal test, the question remains whether they will pass political examination.

83.   But even if that is true, questions remain.

84.   But Drees said some questions remain about the baits, which have been approved by the Environmental Protection Agency and may be marketed under the brand name Extinguish.

85.   But even as stock and bond investors celebrated Tuesday, troubling questions remain.

86.   But even as the first large-scale studies of benefits of genetically modified plants appear, more questions than answers remain.

87.   But as he found during his appearance on C-SPAN, questions remain about the vibrancy of the NAACP.

88.   But for now, questions remain.

89.   But basic questions remain, to judge from reactions here.

90.   But hard questions remain about the rest of the legislation.