11.  It might be quite a difficult thing to draft.

12.  Perhaps the most difficult thing for non-Chinese to understand about Chinese herbal medicine is the terminology used to describe symptoms for which various herbs are effective.

13.  Now this is a very, very difficult thing to ask anyone to do.

14.  These are very emotional things, very difficult things to debate coolly.

15.  And for me it was a very difficult thing.

16.  And this was the most difficult thing for her.

17.  Blame is a difficult thing to assess within the vortex of show business aspirations.

18.  A foreigner was telling their nation some difficult things about the threat of nuclear war and the loss of democracy and the awful consequences of economic stagnation.

19.  A difficult thing from which to walk away.

20.  A state is a difficult thing to carry, but that is exactly what the Kentucky Wildcats have done since November.