单项选择题

Questions 11 to 18 are based on the conversation you have just heard

A．The long wait.
B．The mistakes in her telephone bill.
C．The broken-down computer.
D．The bad telephone service.

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单项选择题

单项选择题

Questions 11 to 18 are based on the conversation you have just heard 您的浏览器不支持 audio 元素。