题目内容
【题目】_____ 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
【答案】A
【解析】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）
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