Before the Libyan War many people put away their valuables in safe places.A. came about

问题补充：

Before the Libyan War , many people put away their valuables in safe places.

A. came about

B. broke out

C. happened

D. broke off

答案：

A. came about

B. broke out

C. happened

D. broke off

解析：词义辨析。Ａ产生，发生；Ｂ爆发；Ｃ发生；Ｄ中断，折断；结合句意可知Ｂ正确。句意：在利比亚战争爆发之前，很多人把值钱的东西都放在了安全的地方了。