【题目】______for the free tickets, I would not have gone to the films yesterday.
A. If it is not B. Were it not
C. Had it not been D. If it were not
在线课程【答案】C
【解析】
试题分析：考查虚拟语气。 这是一个虚拟条件句，主句用的是would + have + 过去分词，可判断出这是对过去情况的虚拟，故条件句用过去完成时；又因为虚拟条件句中有had时，可以将if去掉，然后把had提到主语前面，故选C。