21.   All four can work on the same demonstration, or they can work in pairs on different ones.

22.   All the young men in the area were compelled to work in the quarries and coal mines.

23.   Although they enjoyed working in their field of specialty, a career in management was appealing.

24.   Although they require considerable self-training, such networks are potentially very fast and can work in real time.

25.   Amanda hated working in advertising - it was so competitive.

26.   An extraordinary character, Kellet was a conscientious objector working in the forest on the lower flanks of the mountain.

27.   An old man who worked in a poultry store was stopped for running a light.

28.   And in Bosnia-Herzegovina journalists continue to work in circumstances which are so threatening that most foreign correspondents covering the conflict have fled.

29.   And, for those who work in the travel and tourism industry, this tax could cost them their jobs.