71.   There are nagging questions about whether the new, black-led government is up to the challenge.

72.   Two weeks after assaults on the United States, initial shock has faded into nagging difficult questions for people used to things not being what they seem.

a. + question >>共 706
big 4.26%
same 3.23%
only 2.90%
key 2.56%
unanswered 2.40%
real 1.98%
important 1.94%
serious 1.90%
first 1.87%
tough 1.68%
nagging 0.47%
nagging + n. >>共 196
injury 19.43%
question 8.58%
problem 7.15%
doubt 6.20%
knee 2.62%
concern 2.15%
feeling 2.03%
pain 2.03%
groin 1.91%
sense 1.91%
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