单项选择题

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

A．he had to work overtime.
B．He was held up in traffic.
C．His car ran out of gas.
D．He had a traffic accident.

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单项选择题

单项选择题

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