单项选择题

Questions 18-21 are based on the following dialogue. What are the man and the woman doing

A．Trying to telephone someone.
B．Attending a concert.
C．Waiting in line.
D．canceling reservations.

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问答题

What is the relationship between the two speakers

单项选择题

Questions 18-21 are based on the following dialogue. What are the man and the woman doing 您的浏览器不支持 audio 元素。