完形填空2Happy workers!Last year, GM

完形填空2
Happy workers!
Last year, GMR Ltd won a prize for improving communication with(82)_____staff. Before(83)______ Change, managers had to spend so (84)_____ Time every year finding new workers(85)______ a lot of staff were unhappy and moved to other companies. The number of staff who are leaving(86)______By 30% last year. Customers are (87) _____ Happy now because staff ate so helpful.So, how(88) _____ They do it? The boss, David Langley, explains, ‘Communication now goes both ways. We give(89)_____ a free company mobile phone, so managers can contact me quickly; also staff can communicate problems and ideas to their managers in a monthly meeting. Finally, staff can tell their colleagues about their news(90)______ the company magazine.
【填（85）】
A、or
B、but
C、because
【正确答案】：C