Question

【题目】If we___adequate preparations,the conference wouldn’t have been so successful

A.haven’t offer

B.wouldn’t offer

C.hasn’t offered

D.hadn’t offered

Answer 1

【答案】D

【解析】句意：如果我们没有做好充分的准备，会议就不会如此成功。由主句中的wouldn’t have been so successful可知，表示与过去事实相反，if从句要用过去完成时，故选D。