单项选择题

Questions 19 to 22 are based on the conversation you have just heard.

A．In the student recreation center.
B．In the university bookstore.
C．In the campus dining hall.
D．In a classroom.

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单项选择题

Questions 19 to 22 are based on the conversation you have just heard. 您的浏览器不支持 audio 元素。