1．——Alice,why didn´t you come yesterday?

   ——I _____,but I had an unexpected visitor.

  A.had    B.would    C.was going to    D.did

  析:此题A、D明显不合上下文，因为乙方没有去。B选项若为would have则成立，可以理解为I would have come if I hadn´t had an unexpected visitor.的简略式。但此处是would,故应排除。只有was going to可得体地表达“我原本打算去的，但是有不速之客造访”这一意思。

2．If there were no subjunctive,English ______ much easier.   

  A.will be     B.would have been    C.could have been    D.would be

  析：观察题干，可知全句表达的是与现在事实相反的虚拟语气。故答案为D。

3．The guard at the gate insisted that everybody ______ the rules.

  A.obeys    B.obey    C.will obey    D.would obey

  析：根据insist后的宾语从句谓语要用(should) do形式规律，可定正确答案是B。

4．I wish I _____ you yesterday.

  A.seen    B.did see    C.had seen    D.were to see

  析：此题表与过去事实相反的原望，答案应为C。

5．—— If he _____ ,he _____ that food.

   —— Luckily he was sent to the hospital immediately.   

  A.was warned;would not take    B.had been warned;would not have taken

  C.wuld be warned;had not taken    D.would have been warned;had not taken

  析：从对话看，是表达与过去事实相反的虚拟语气，故答案为B。

6.Without electricity human life _____ quite different today.

  A.is    B.will be    C.would have been     D.would be

  析：without引出一个含蓄条件句，主句表述的是与现在事实相反的虚拟语气，故答案为D。

7．When a pencil is partly in a glass of water,it look as if it _____.

  A.breaks    B.has broken    C.were broken    D.had been broken

  析；放入水中的铅笔看上去是断的，但实际上并非如此，因此是与现在的事实相反，这时as if从句谓语要用一般过去时，故答案为C。

8．You didn´t let me drive.If we _____ in turn,you _____ so tired.

  A.drove;didn´t get             B.drove;wouldn´t get  

  C.were driving;wouldn´t get    D.had driven;wouldn´t have got

  析：观察题干，可知if从句表述与过去事实相反的假设，因此答案只能是D。

9．I didn´t see your uncle at the party.If he _____ ,he would have said hello to  

   me.

  A.would come    B.had come    C.came    D.did come

  析：观察题目上下文，特别是第二句的主句谓语为would have said，可知if从句表述的是与过去事实相反的愿望，因此答案为B。

10．_____ it _____ for your help,I couldn´t have made any progress.

  A.Had;not been    B.Should;not be    C.Did;not be    D.Not;be

  析：根据主句谓语形式，可知从句要用had done形式，故应选A，Had it not been for your help＝If it had not been for your help.（要不是你帮忙的话）

11．Mr Smith was badly ill,or he _____ our dinner party.

  A.should come to    B.would have attended    

  C.would come to    D.should have attended

  析：or可引导含蓄条件句，表达虚拟语气。根据此题内容，可知是与过去事实相反的假设，故答案为B。