更多“She_____ answer my phone call yesterday.A. doesn'tB. didn'tC. wasn't ”相关问题
  • 第1题:

    ---Do you want a lift home?

    ---It’s very kind of you, but I have a much late in the office. I overslept this morning because my morning clock _______.

    A. doesn’t go off

    B. won’t gone

    C. wasn’t going off

    D. didn’t go on


    正确答案:B

  • 第2题:

    4. The meeting ______ begin ______ the last man came.

    A. didn’t ;until

    B. not; until

    C. doesn’t; until

    D. will; until


    正确答案:A
    4.A【解析】not... until表“直到……才……”,由后面 “came”可知为一般过去式。

  • 第3题:

    若周期信号x(t)的周期为T,则其基波角频率为()。

    A.2π/T

    B.π/T

    C.π/2T

    D.1/T


    2 π/T

  • 第4题:

    _________ she practice her violin yesterday? No, she _________.

    A、Was, wasn’t

    B、Did, didn’t

    C、Was, didn’t

    D、Did, wasn’t


    正确答案:B

  • 第5题:

    __________

    A.haven‘t I
    B.don’t I
    C.wasn‘t I
    D.didn’t I

    答案:D
    解析: