题目

Thank you for giving me a hand. I ______ in the experiment without your valuable help. A. have failed        B. will fail      C. would have failed        D. must have failed 答案：C 解析: 考查含蓄条件句。该句用介词短语表达条件，即：I would have failed in the experiment without your valuable help.=I would have failed in the experiment if I hadn’t got your valuable help.如果没有你宝贵的帮助，我本会实验失败的。

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