______ it______ for your help,I couldn't have made any progress.
A.Had;not been
B.Should;not been
C.Did;not been
D.Not;be
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◎ 知识点
根据n多题专家分析,试题“______ it______ for your help,I couldn't have made any progress.A.Had;not beenB.Should;not beenC.Did;not beenD.Not;be…”主要考查了你对 【虚拟语气】,【情态动词】 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。
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