Question

the fire broke out in the basement. that's where it___ 1 burst 2 burst out 3 set out 4 began

选择哪一个，及分别说出每个为什么对与错

Answer 1

选4，began

主句中的broke out ,就是break out, 意思是the fire 已经着了，已经开始了。that's where it began,就是指火就是从这作烧起来的。

break out 的解释：
“if something unpleasant such as a fire, fight, or war breaks out, it starts to happen”（不幸的事如火，战斗或战争break out, 那就是开始发生。）

有问题还可以追问。

Answer 2

began ==started / formed