◎ 题干
— Have you ever visited the Opera House?
—Yes.When I was in Sydney, I ______ it twice.
A.have visitedB.had visitedC.visitedD.would visit
◎ 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“— Have you ever visited the Opera House?—Yes.When I was in Sydney, I ______ it twice.A.have visitedB.had visitedC.visitedD.would visit…”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。