31.   But staying on top of the heap in the highly competitive and heavily calculated country-music market is a real challenge.

32.   But the real challenge for the future, Cosic said, is how democracy will deal with the demands for statehood from every minority.

33.   But the real challenge is to make him and Unionist rejectionists irrelevant.

34.   But the real challenge remains revenue growth.

35.   But the real challenge is to dip as deeply into the river on later trips as on the first visit.

36.   But the real challenge is what to do with that raw information once it has been collected.

37.   But the real challenge, Baird added, is not only to raise access to information technology but to offer truly appealing content.

38.   But the real challenges were mental.

39.   But the government faces a real challenge when it comes to convincing the refugees, most of whom are illiterate.

40.   But the real challenge came in staffing a manufacturing plant never before designed.

a. + challenge >>共 1042
legal 9.81%
biggest 5.60%
new 5.53%
serious 3.40%
major 2.76%
real 2.04%
greatest 1.96%
strong 1.83%
first 1.71%
big 1.62%
real + n. >>共 1189
life 4.72%
world 3.84%
thing 3.20%
problem 2.65%
name 2.11%
issue 1.51%
people 1.48%
reason 1.39%
power 1.31%
test 1.26%
challenge 0.73%
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