◎ 题干
Thank you for helping me. I       the final exam without your timely help.
A.have failedB.will failC.would have failedD.must have failed
◎ 答案
查看答案
◎ 解析
查看解析
◎ 知识点
    根据n多题专家分析,试题“Thank you for helping me. I the final exam without your timely help. A.have failedB.will failC.would have failedD.must have failed…”主要考查了你对  【一般现在时】【将来进行时】【过去完成进行时】【过去将来时的被动语态】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。