单项选择题

Questions 4 to 7 are based on the following conversation. At the end of the conversation, you will be given 20 seconds to answer the questions. Now listen to the conversation. The speakers are ______

A．a student and the director of the housing office
B．a student and a professor
C．two students
D．two housing office staff members

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单项选择题

单项选择题

Questions 4 to 7 are based on the following conversation. At the end of the conversation, you will be given 20 seconds to answer the questions. Now listen to the conversation. The speakers are ______ 您的浏览器不支持 audio 元素。