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听下面一段对话，回答第14和第17两个小题。
14. Where could the man smoke?
A. On the first floor B. In the whole building C. Outside the building
15. How did the man deal with his smoking habit?
A. He had tried to give it up but in vain(徒劳).
B. He had never tried to give it up.
C. He had given it up a few times.
16. What does the man decide to do in the end?
A. To smoke outside B. Try to give up smoking C. To smoke at a later moment
17. What’s the relationship between the two speakers?
A. Strangers B. Friends C. Colleagues(同事)
