【题目】半夜发生了火灾，幸运的是很快就被不灭了。
A fire at midnight, but , it was soon put out.

【答案】roke out；luckily/fortunately
【解析】break out“爆发”相当于不及物动词，无被动式，由时间状语at midnight可推断用一般过去时，故第一空填broke out；作状语用副词，故第二空填luckily或者fortunately。故填(1). broke out (2). luckily/fortunately 。