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

    —Who is that boy reading in the garden? Is it David?
    —It_______be David. He has gone to Shanghai with his grandparents.
    A. can’t B. may not C. mustn’t D. will not