练习册

  • 练习册
  • 试题
    3．While doing my homework. . A．I heard the doorbell ring B．the doorbell rang C．my mother came in D．my mother was cooking 答案与解析:A 只有当状语从句的主语与主句主语一致时.才能省略从句中的主语和be动词.所以主句主语必须是I.因此选A项. 【查看更多】

     

    题目列表(包括答案和解析)

    While doing my homework，________.

    A．I heard the doorbell ring

    B．the doorbell rang

    C．my mother came in

    D．my mother was cooking

     

    查看答案和解析>>


    同步练习册答案