Seeing the enemy, Gary was behaving as though nothing .
A. happened
B. had happened
C. would happen
D. was happening
网友回答
A. happened
(答案→)B. had happened
C. would happen
D. was happening
解析：考查虚拟语气；连词as if/though后面的句子有两种情况：如果是真实的事情，就使用陈述语气；如果是虚假的事情，就使用虚拟语气；如果说明的是过去的事情，就使用过去完成时表示对过去的虚拟。句意：看见敌人，Gary表现得就像没有什么事情发生一样。根据句意说明是与过去事情相反的虚拟语气，故选择B项。