单项选择题

Questions 16 to 18 are based on the passage you have just heard.

A. They like music. B. They want to say something.
C. They sing for enjoyment. D. They are in a good temper.

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单项选择题

Questions 16 to 18 are based on the passage you have just heard. 您的浏览器不支持 audio 元素。