The bus driver stopped the bus immediately when the light is red.(保持原句意思)上面的是原句,下面的是题目The bus driver stopped the bus_____ _____ when the light is red.

问题描述:

The bus driver stopped the bus immediately when the light is red.(保持原句意思)
上面的是原句,下面的是题目
The bus driver stopped the bus_____ _____ when the light is red.

at once,立刻的意思,等于immediately

at once 立即

at once /right away马上,立刻
= immediately