单项选择题

Questions 8 to 10 are based on the following conversation. At the end of the conversation, you will be given I5 seconds to answer the questions. Now listen to the conversation. Parcels must be left open mainly for ______

A．customs’ check
B．serenity check
C．convenience’ s sake
D．the company’ s sake

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单项选择题

单项选择题

Questions 8 to 10 are based on the following conversation. At the end of the conversation, you will be given I5 seconds to answer the questions. Now listen to the conversation. Parcels must be left open mainly for ______ 您的浏览器不支持 audio 元素。