______arriving at the meeting room, Tina discovered that she had left the sample

游客2023-09-25 39

问题 ______arriving at the meeting room, Tina discovered that she had left the sample products in her office.

选项 A、By
B、Through
C、On
D、In

答案 C

解析本题考查介词on的用法。On+v.ing表示“一……就……”，所以C项为正确答案。

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