【题目】You could work out the problem easily now if you ______ absent from the physics class last Friday.
A. weren’t B. hadn’t been
C. haven’t been D. wouldn’t have been
在线课程【答案】B
【解析】
试题分析：考查虚拟语气。句意：如果你要是上周五不缺席物理课现在你就能轻易的通过考试。根据last Friday.可知条件句是对过去的推测，因此用过去完成时。