_____ arriving home she found her old friend already there.
_____ arriving home she found her old friend already there.
A、On
B、For
C、By
D、With
【正确答案】:A
【题目解析】:本题考察介词辨析,句意为:她一到家就发现他的老朋友已经在那里了。On 一……就……,符合题意。for为了,by 通过,with 用。

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