单项选择题

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

A．He had to work over time.
B．He was held up by the traffic jam.
C．The oil was running out,
D．An accident.

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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。