单项选择题

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

A．A long time, it’s a quiet area.
B．Not long, it’s a busy area.
C．5 minutes.
D．30 minutes or so.

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