单项选择题
您的浏览器不支持 audio 元素。
A.A guest speaker might arrive.
B.Class might be cancelled.
C.There might be a short quiz.
D.Homework might be collected.
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单项选择题
A.By the end of 2006.B.By the end of 2007.C.In October 2006.D.In October 2007.
A.By the end of 2006.
B.By the end of 2007.
C.In October 2006.
D.In October 2007.
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填空题
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