单项选择题

Passage One Questions 11 to 13 are based on the passage you have just heard.

A．Because she had to be left on duty.
B．Because she was ill.
C．Because she wasn’t invited.
D．Because she bad to dance with her patients.

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单项选择题

单项选择题

Passage One Questions 11 to 13 are based on the passage you have just heard. 您的浏览器不支持 audio 元素。