问题补充：
The battle lasted for a few hours and at last the enemy .
A. was defeated
B. were beat
C. were won
D. defeated
答案：
(答案→)A. was defeated
B. were beat
C. were won
D. defeated
解析：考查语态及动词辨析。Defeat击败，战胜，尤指在战场上打败敌人；beat打，打败，一般用于游戏，比赛中； win获胜。句意：这次战役持续了几个小时，最后敌人被打败了。故选A。
