Question

By the time the fire-engine arrived, the fire        by the inhabitants.   

A．put out	B．had been put out
C．was put out	D．had put out

Answer 1

B

本题考查时态和语态。句意：当救火车到达的时候，火被居民们扑灭了。由句意可知应用被动语态；且动作在arrived之前发生，要用过去完成时。