The President was talking to all the department heads while a group of unexpecte

游客2023-12-27 28

问题 The President was talking to all the department heads while a group of unexpected important clients had arrived for a talk with him.

选项 A、when ... were arriving
B、as ... had arrived
C、when ... arriving
D、when ... arrived

答案 D

解析

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IncaseoftheremovalofthePresidentfromoffice,orofhisdeath,resignatio