31.   But the decision on just how much Chinese culture is good remains a difficult one.

32.   But the past few years have been difficult ones for the company.

33.   But, as both Manheim and Barrie observe, the lesson has been a difficult one for many Americans, and the censorship wars are still raging.

34.   By any measure, the period during which Kelley led the bureau was a difficult one.

35.   Clearly, the ordeal has been a difficult one.

36.   Dealing with temperamental actors like Dustin Hoffman, or indecisive ones like Warren Beatty, or difficult ones like Barbra Streisand, can be grating.

37.   Doctors often become awed by famous patients, adding to the difficulties of managing the difficult ones.

38.   Dr. Donald S. Burke, director of the center for immunization research at Johns Hopkins University, said the issue is a difficult one.

39.   Even economists who think the Fed will not act say the decision is an extremely difficult one.

40.   Events are conspiring to make the new administration a more difficult one than the campaigning implied.