单项选择题

Questions 4 to 7 are based on the following conversation. At the end of the conversation, you will be given 20 seconds to answer the questions. Now listen to the conversation. When do the students pay for the meals they contract for

A．When they get the meal.
B．At the beginning of the week.
C．At the beginning of the year.
D．At the end of the year.

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单项选择题

单项选择题

Questions 4 to 7 are based on the following conversation. At the end of the conversation, you will be given 20 seconds to answer the questions. Now listen to the conversation. When do the students pay for the meals they contract for 您的浏览器不支持 audio 元素。