单项选择题

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

A．Studying microbiology for a year.
B．Teaching biology.
C．Taking a nap.
D．Taking a different course.

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______ (我们没有人料到主席会出现) at the party. We thought he was still in hospital.

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I have had great deal of trouble ______ (跟得上班上的其他同学).

Questions 11 to 18 are based on the conversation you have just heard. 您的浏览器不支持 audio 元素。