单项选择题

Questions 19 to 22 are based on the conversation you have just heard.

A．Planning a sightseeing tour.
B．Writing to his uncle.
C．Arranging his class schedule.
D．Looking through a language textbook.

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Questions 19 to 22 are based on the conversation you have just heard. 您的浏览器不支持 audio 元素。