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:选择题 题类:单元测试 难易度:中档

    Our countryside ______ be poor, but now it is getting richer and richer.
    A. use to B. be used to C. used to D. be using to
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