If we a full preparation the meeting wouldn't have been so successfulA. haven't madeB. w

问题补充：

If we a full preparation, the meeting wouldn have been so successful．

A. haven made

B. wouldn make

C. didn make

D. hadn’t made

答案：

A. haven made

B. wouldn make

C. didn make

D. hadn’t made

解析：考查虚拟语气：句意：如果我没有充分准备，会议就不会这么成功。动作是和过去相反，if条件句用过去完成时，主句是wouldn’t have done。选D。