职教组卷基于海量职教高考试题库建立的在线组卷及学习系统
职教组卷
  • 题型:英语知识运用 题类:期末考试 难易度:难

    The old couple have been married for 40 years and never once ___________ with each other.

    A. they have quarreled B. have they quarreled C. they had quarreled D. had they quarreled
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