I can’t thank you too much for your kindness because without your help I<u> </u>have won the first prize in the speech contest.
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答案D考查情态动词的虚拟语气的用法。意为,我再感谢你也不为过,没有你的帮助,我不可能在演讲比赛中获得第一名。根据句意可知,演讲比赛已经结束。Can't have done 不可能做了某事。 Shouldn't have done 本不应当做某事 might not have done 可能没有干某事,均不符合题意。 查看原帖>>