题目内容
15．A．Bob often comes late to his class．B．Bob is a new comer to the class．
C．Bob had no class in the morning．
D．Bob has told him the reason．
分析 略
解答 A
点评 略
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B．Bob is a new comer to the class．
C．Bob had no class in the morning．
D．Bob has told him the reason．
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