11.  And the most difficult part of that endeavor, he said, was being on the road.

12.  Anne-Sophie Mutter played the difficult solo parts with poise and rectitude, even though the rectitude functioned on a larger scale than usual.

13.  As he fell asleep, he vividly felt the rocks under his hands from a particularly difficult part of the climb.

14.  As well as Watson is playing, the difficult part has only just begun.

15.  As with adolescence, the difficult part is just beginning.

16.  Asked what the most difficult part of being a priest is, Everson bowed his head for a moment and thought.

17.  Being locked into one thing for three months, and being away from home, is the most difficult part.

18.  Both the Tchaikovsky and the Rachmaninoff contain very difficult piano solo parts, accompanied by thick orchestrations.

19.  According to Springer, who has experience riding across country, the pace will be the most difficult part.

20.  According to Beem, the most difficult part and the greatest obstacle to hang gliding is the training.