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:较难

    Not until he retired from teaching three years ago ________ having a holiday abroad.

    A. had he considered  B. he had considered C. he considered  D. did he consider
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