单项选择题

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

A．The seat is not occupied.
B．The seat is already reserved.
C．A book is under the seat.
D．A book is on the seat.

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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。