◎ 题干
---How long _______ each other before they ________ married ?
-- -For about a year .
A.have they known ; getB.did they know ; were going to get
C.do they know ; are going to getD.had they known ; got
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“---How long _______ each other before they ________ married ?-- -For about a year . A.have they known ; getB.did they know ; were going to getC.do they know …”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。