1.   And looking at our own context is as difficult for us as it is for fish to look at water.

2.   As nationalistic feelings grew, life became increasingly difficult for immigrants.

3.   At times this was very difficult for him because he had chronic bronchitis and therefore coughed a great deal.

4.   Be alert to the possibility of change to cross-talk between four people, which is much more difficult for the speechreader.

5.   But even if you speak many foreign languages, such transactions become difficult for currency reasons.

6.   Calculating the probability of the quark following this path from A to B involves integration, which is always difficult for computers.

7.   Deciding when this occurs is particularly difficult for the therapist.

8.   Having to adopt the fast-track method made life difficult for all three.

9.   He could make things very difficult for us.

10.   He feels the nomadic lifestyle contributed to a shyness which has made it difficult for him to establish close friendships ever since.