She was so hurt by his words.__he has gone,she burst into tears.应选什么?为什么?

问题描述:

She was so hurt by his words.__he has gone,she burst into tears.应选什么?为什么?
A at the moment  B immediately  C at once   D right away 

A 表示在他离开的那个时候,她就哭了
其余的适合放在动词后面,作状语