单项选择题

Questions 14-17 are based on a conversation you are going to hear. What was the man doing when the woman approached him

A．Reading.
B．Sleeping.
C．Doing research.
D．Planning a trip.

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单项选择题

单项选择题

Questions 14-17 are based on a conversation you are going to hear. What was the man doing when the woman approached him 您的浏览器不支持 audio 元素。