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:其他 难易度:较易

    The twins were so much alike that we had great trouble ________one from the other.

    A. distinguishing B. to distinguish C. distinguish D. distinguished 
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