?Read the article below about relationship and productivity. ?For each question 31-40, write one word in CAPITAL LETTERS on your Answer Sheet. Doing Favours at Work Productivity rises when workers help each other more. Francis Flynn, of Columbia University's business school, studied 161 engineers working for a telecoms firm near San Francisco. They work in eight teams, but each individually sorts (31) detailed engineering problems sent in from around the country. Mr. Flynn asked each employee to report how (32) he swapped help with each member of the team and who had given relatively more in their exchanges. Thus, he looked separately at the frequency with (33) individual workers made such swaps and at how one-sidedly generous they were. He also asked employees to rate how highly they regarded one (34) Mr. Flynn correlated the answers he got with information from the firm on employees' productivity. He found that generous employees who got little (35) exchange were well-regarded by colleagues. Employees who helped colleagues generously but did not receive help in return were less productive. Those who received as well as gave (36) relatively more productive, particularly those who helped each other most often. A pattern of frequent giving and receiving boosted (37) productivity and social standing. Why (38) productivity rise when employees frequently swap help? Mr. Flynn has two explanations. First, as employees learn more about the resources they can offer each other, they develop a more-efficient pattern of requesting and giving help. Second, helpful employees learn to trust each other more, and become willing to do bigger favours because they feel more sure (39) the likelihood of reciprocation. And, of course, it is nicer to work with helpful people (40) with the other sort. (31)