单项选择题

Questions 19 to 21 are based on the conversation you have just heard.

A．Two weeks before the final exams.
B．One week after the final exams.
C．One week before the final exams.
D．Two weeks after the final exams.

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单项选择题

单项选择题

Questions 19 to 21 are based on the conversation you have just heard. 您的浏览器不支持 audio 元素。