练习册

  • 练习册
  • 试题
    精英家教网 > 高中英语 > 题目详情
    —Why does the lake smell terrible?
    —Because large quantities of water ________.
    A．have pollutedB．is being polluted
    C．has been pollutedD．have been polluted
    D
    由语境可知水已经被污染了，要用现在完成时，排除B项；large quantities of...作主语时，谓语动词要用复数形式，排除C项；water与pollute之间存在动宾关系，故此处应用被动语态，排除A项。
    练习册系列答案
    年级 高中课程 年级 初中课程
    高一 高一免费课程推荐！ 初一 初一免费课程推荐！
    高二 高二免费课程推荐！ 初二 初二免费课程推荐！
    高三 高三免费课程推荐！ 初三 初三免费课程推荐！
    相关习题

    科目：高中英语 来源：不详 题型：单选题

    When he ________ the door，he found his keys were nowhere.
    A．would openB．opened
    C．had openedD．was to open

    查看答案和解析>>

    科目：高中英语 来源：不详 题型：单选题

    They____on the program for almost one month before l was arranged to help them. Now, we____on it as no result has come out.
    A．had been working: are still working
    B．had worked; were still working
    C．have been working; have worked
    D．have worked; are still working

    查看答案和解析>>

    科目：高中英语 来源：不详 题型：单选题

    (2013·福建南平二检)—Does he work hard at his lessons?
    —Yes, he ________ no effort, as far as I know.
    A．wastes B．shares
    C．spares D．makes

    查看答案和解析>>

    科目：高中英语 来源：不详 题型：单选题

    The basketball coach，as well as his team，________ interviewed shortly after the match for their outstanding performance.(2012·陕西)
    A．wereB．wasC．isD．are

    查看答案和解析>>

    科目：高中英语 来源：不详 题型：单选题

    In order to find the missing child，villagers ________ all they can over the past five hours.(2012·安徽)
    A．didB．do
    C．had doneD．have been doing

    查看答案和解析>>

    科目：高中英语 来源：不详 题型：单选题

    My seven-year-old daughter has a great interest in music and _______ Piano classes twice a week over the last three years.
    A．tookB．is takingC．had takenD．has been taking

    查看答案和解析>>

    科目：高中英语 来源：不详 题型：单选题

    (2013·南昌10所省重点中学二模)Mary ________ as a secretary in this company for twenty years and now she stays at home taking care of her own garden.
    A．has servedB．had served
    C．is servingD．served

    查看答案和解析>>

    科目：高中英语 来源：不详 题型：单选题

    —Oh no! We’re too late. The train ______.
    —______. That’s OK. We’ll catch the next train to London.
    A．was leavingB．had leftC．has leftD．has been leaving

    查看答案和解析>>

    同步练习册答案