I____have failed the exam without your help.

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I____have failed the exam without your help.
A.should B.shall C.might D.will

C.might have done 的意思是过去可能做过某事.句意：如果没有你的帮助我看能救考试不及格了.
should have done是过去本应该做而没做的意思（指有义务做）；shall不能和have done搭配；will也不能和have done搭配,只能说would have done,过去本来会做某事的意思.

I____have failed the exam without your help. I will fail the exam without your help.改为同义句 David failed the exam again Were it not for his help,I would have failed the exam.这句话怎特别 The d_____ news is that your sister failed in the exam this We can't pass the exam without the teachers' help.(保持句意不变) You might （） your parents if you failed the exam again. 3.Your classmate told you that he had failed the exam,what s 高中英语知识Did your sister pass the exam?——She failed and is in l you might _____ your parents if you failed the exam again ___________ my teacher's help,I passed the exam A.Without B. i can't finish the work without your help.请问这句中without your