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:月考试卷 难易度:较易

    At present,there are thousands of people _____________around the clock to fight against the flood.(  )
    A. are working B. worked C. working D. to work
  • 相关试卷