问题
选择题
Upon ______ the office, he saw the message on his desk.
A．he arrived
B．arrived at
C．arriving at
D．arriving
答案
答案：C
这题考查upon+名词或动名词，表示“一怎么就”，句意是：一到办公室，他就看见桌上的消息。选C。
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Upon ______ the office, he saw the message on his desk.
A．he arrived
B．arrived at
C．arriving at
D．arriving
答案：C
这题考查upon+名词或动名词，表示“一怎么就”，句意是：一到办公室，他就看见桌上的消息。选C。