＿＿＿＿＿＿ for the free tickets I would not have gone to the films so often. A. If it is notB

问题补充：

＿＿＿＿＿＿ for the free tickets, I would not have gone to the films so often.

A. If it is not

B. Where it not

C. Had it not been

D. If they were not

答案：

A. If it is not

B. Where it not

(答案→)C. Had it not been

D. If they were not

解析：Had it not been是if it had not been的倒装形式，意思是“要不是……”。