题目内容
（请给出正确答案）
[主观题]
听力原文：W: Why are you late？M: I'm sorry, but next time I'll be in time to have classes.
听力原文：W: Why are you late？
M: I'm sorry, but next time I'll be in time to have classes.
What's the relationship between them？
A．Teacher and student.
B．Doctor and patient.
C．Boss and worker.
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