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:期中考试 难易度:中档

    —Why didn't you answer me just now?
    —I ______ the number of the books.
    A. am counting B. will count C. count D. was counting
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