题目

题型：不详难度：来源：

_____ your advice, I would have had no trouble with my papers.

A．Had I followed

B．If I followed

C．If I have followed

D．Once I followed

答案

A

解析

根据would have had可知, 这是是一个表示与过去事实相反的假设。if条件从句用过去完成时had done，又知if条件句中如有were, should, had，可以省去if，并使用倒装语序, 即were, should, had+主语+谓语动词。故答案为A。