Upon ______ the office, he saw the message on his desk. A．he arrivedB．arrived a_刷题宝

题干

Upon ______ the office, he saw the message on his desk.

A．he arrived

B．arrived at

C．arriving at

D．arriving

上一题下一题 0.85难度单项选择更新时间:2011-01-21 03:19:38

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