问题
选择题
.Nobody knew when the fire ________, but they knew it ________ the next morning.
A．broke out; was put out
B．was broken out; was put out
C．broke out; put out
D．was broken out ; wwent out
答案
A
考查短语：break out 指战争，火灾的发生，没有被动语态，put out 扑灭，是及物动词短语，有被动语态，句意：没有人知道大火是什么时候发生的，但是他们知道第二天早晨火被扑灭了。故选A。