If I more about diamond I cheated by that man.A. had known would not beB. had known;

问题补充：

If I more about diamond, I cheated by that man.

A. had known, would not be

B. had known; wouldn’t have been

C. knew; would not have been

D. had known; would never be

答案：

A. had known, would not be

(答案→)B. had known; wouldn’t have been

C. knew; would not have been

D. had known; would never be

解析：这题考查if的非真实条件句，根据句意：如果我知道更多的关于钻石，我就不会被那个人骗了。说明是和过去相反的情况，if条件句用过去完成时，主句用would have done。选B。