I’d have told you.A. If I would have knownB. If I had have known C. Had I knownD. Sh

问题补充：

, I’d have told you.

A. If I would have known

B. If I had have known

C. Had I known

D. Should I know

答案：

A. If I would have known

B. If I had have known

(答案→)C. Had I known

D. Should I know

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