— Choose the best word to fill each gap from A, B, C or D below.
— For each question 19 - 33, mark one letter (A, B, C or D) on your Answer Sheet.
— There is an example at the beginning (0).
GETTING THE BALANCE RIGHT
Leaving work on time may not sound like much of a (0)______ However, in an experiment by glass manufacturers Dartington Crystal, it (19)______ surprisingly difficult. Four managers, who all worked very long hours, took (20)______ in a simple experiment: they agreed to (21)______ to their set hours for a week, with no coming in early, leaving late or taking work home. The aim of the exercise was to (22)______ the balance between the managers' work and home lives. It was a way to get everyone thinking about their working hours and how to (23)______ them,
Robin Ritchie, the company's managing director, was very aware that his company was (24) ______ on the experiment at its busiest time of the year. They were also just days away from a big product (25)______ So not surprisingly, perhaps, it soon became clear that it wasn't going to be easy: even on the first day, director of design Simon Moore took home a design problem to (26)______ as he couldn't relax until he had dealt with it.
As the week progressed, the four people involved found it hard to (27)______ with the pressure of leaving work undone. They felt they were (28)______ people down, and worried about the effect on the business. (29)______ crises made it more and more difficult to go home on time. Changing working habits wasn't easy. (30)______ they saw the experiment through to the end.
There was some (31)______ up to do the following week, but the company did not appear to have suffered. Significantly, too, the experiment made the managers reappraise their (32)______ to staying late and start prioritising tasks. All in all, they felt the experiment was of (33)______ benefit, and that it helped them to create a better balance in their lives.

A. displayed
B. showed
C. proved
D. demonstrated