31.   It also addresses the nagging question of what the universe is made of.

32.   It has become a nagging question.

33.   It was Greer, offering referrals to support services, a sympathetic ear and the knowledge to answer the nagging questions.

34.   Like so many others, the teacher was unable to handle nagging questions about the empty desk the girl left behind.

35.   More worrisome is the nagging question that all this grave-robbing leaves behind.

36.   Moreover, friends and observers say, the case raises nagging questions.

37.   Minnesota has the best conference record, but health at quarterback is a new question, while overall defensive strength remains a nagging question.

38.   Nagging questions remain, however, about the stability of these new households and the well-being of the children growing up in them.

39.   One nagging question for proponents of the new theory is why no symptoms of schizophrenia appear for two decades or more if the brain abnormalities are present from birth.

40.   Still, Isserman said he had a nagging question about whether a regional approach to the problems of rural America would provide dramatic results.