Question

【题目】Had they known what was coming next, they _____ second thoughts.

A. may have B. must have had

C. could have D. might have had

Answer 1

【答案】D

【解析】试题分析：考查虚拟语气。句意：如果他们知道接下来会发生什么，他们本来可能会三思的。前面Had they known可知是对过去的虚拟，他们是可能会在考虑而不是肯定会，故选D项。