问题
选择题
______, I'd have told you. [ ]
A. If I would have known it
B. If I had have known it
C. Had I known it
D. Should I know it
答案
答案：C
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______, I'd have told you. [ ]
A. If I would have known it
B. If I had have known it
C. Had I known it
D. Should I know it
答案：C