half an hour earlier, you would have met the famous writer.
A. If you came
B. Would you e
C. Had you e
D. Should you have e
网友回答
A. If you came
B. Would you e
(答案→)C. Had you e
D. Should you have e
解析：
试题分词：考查虚拟语气中的省略。根据主句中的would have met说明这是一个与过去事实兴奋地虚拟语气，本句中使用过去完成时if you had e half an hour earlier.省略了if要使用部分倒装的形式。故C正确。