41.   Still, one nagging question remains.

42.   Still, the nagging questions continue.

43.   That answers a lot of our nagging questions about quality.

44.   That nagging question, which lured Murray into this hunt, has also captivated astrophysicists Daniel Whitmire and John Matese of the University of Louisiana at Lafayette.

45.   The Dutch government has produced several reports, but never answered all the nagging questions.

46.   The commission created last year by former Prime Minister Selim Al-Hoss to find the missing left families with many nagging questions.

47.   The goal and the victory also allowed the Americans to answer some nagging questions about themselves.

48.   The nagging question is whether streaming video will work for fans, and whether it will be profitable for the NBA and advertisers.

49.   The nagging question is whether Perez can be both provider to the children and police investigator who must question them.

50.   The nagging question is whether these accidents are isolated or systemic.