A、Classmates. B、Colleagues. C、Boss and secretary. D、PR representative and client. B录音提到，John和Sue加入了一家成功的public relation公司。由此可知他们

Both John and Sue joined the staff of a successful public relation’s firm in New York during the same year. They had just completed their PR degrees at a nearby university and were thrilled to be hired by one of the finest PR firms in the city. John’s first assignment was to create a promotion campaign for a client who was to put in a new game on the market. Initially Sue was assigned to work with a sportswear company on the marketing concept for its newest line of clothing. As time passed and work with their respective first clients became more and more difficult, John and Sue realized that they had been assigned two of the toughest accounts in town. Although John completed his assignment quickly and successfully, he was furious when he learned that the boss had deliberately assigned him a difficult account. In response, he not only complained to his colleagues, but also to the boss’s secretary. Sue, on the other hand, had a more difficult time satisfying her first client and she took several additional months to actually complete the project. However, she just laughed when she heard that the boss had made the assignments purposely. Over the next two years John worked reluctantly with each assignment and problem that he encountered. [18]Sue accepted each assignment cheerfully and when problems arose she responded with her characteristic, "No problem, I can handle it." Although Sue took longer to complete her projects than John and both were equally successful on the assignments they completed, Sue was given the first promotion when there came a vacancy.
16. What’s the relationship between John and Sue now?
17. Why was John furious after he finished his first assignment?
18. What’s Sue’s attitude to difficult tasks?
19. How does the story end?