单项选择题

Questions 22 to 25 are based on the conversation you have just heard.

A．Because it is part of his study.
B．Because his uncle needs help.
C．Because he wants to visit the seaside.
D．Because he has to earn for his tuition.

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单项选择题

单项选择题

Questions 22 to 25 are based on the conversation you have just heard. 您的浏览器不支持 audio 元素。