◎ 题干
I know it’s normal for such a thing to happen, but we _____ it if we’d been more careful.
A.need have avoidedB.could have avoided
C.will have avoidedD.had avoided
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“I know it’s normal for such a thing to happen, but we _____ it if we’d been more careful.A.need have avoidedB.could have avoidedC.will have avoidedD.had avoid…”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。