--Excuseme,youaresupposedtohandinyourdesignnow.--I’msorry,mycomputerb

--Excuse me, you are supposed to hand in your design now.--I’m sorry, my computer broke down, or I ________ it last night.A.finishedB.would finishC.had finishedD.would have finished

D解析试题分析：考查虚拟语气：句意：--对不起，你现在应该交设计了。--对不起，我的电脑坏了，否则昨晚就已经完成了。这里的or相当于if my computer hadn’t broken down，主句应该是和过去相反的虚拟语气，选D。考点：考查虚拟语气点评：这题是隐含的if的虚拟语气，or，otherwise相当于非真实条件句，简要概括如下：1、表示与现在事实相反的情况，从句：If主语+过去时(Be动词用were)；主句：主语+should/would/could/might+do：　2、表示与过去事实相反的情况，从句：If主语+had+done；主句：主语+should/ would /could / might+have done　3、表示对将来情况的主观推测，从句：①if+主语+were to do②if+主语+should+do ③if+主语+did（动词过去式）/were ；主句：主语+should/would/could/might+do。

对的，就是这个意思