问题
选择题
____ the fire broke out, three fire-engines were rushed to the spot.
A．Hardly
B．Quickly
C．Immediately
D．Gradually
答案
答案：C
题目分析：这四个选项都是副词：A. Hardly几乎不，B. Quickly很快，C. Immediately立刻，D. Gradually逐渐地，但是immediately也可以做连词“一…就…”，引导时间状语从句，句意：火灾一爆发，三个消防队员就冲到现场。所以选C。