I would never have believed it was possible if I ______ it with my own eyes. A. didn'

Question

I would never have believed it was possible if I ______ it with my own eyes.

A. didn't see

B. don't see

C. won't see

D. hadn't seen

Answer 1

正确答案：D
     8．这是一个条件句。与过去已发生的事实相反，主句用过去将来完成时，条件从句用过去完成时选项D 是正确的。