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题目
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For the engine to work, the green button        be in the “on” position.
A.canB.wouldC.mustD.might

答案
C
解析
考查情态动词。Can能,可能;would将要,愿意;must必须,一定;might可能,也许。句意:为了机器能工作,这个绿色的按钮必须在“on”的位置。故选C。
核心考点
试题【For the engine to work, the green button        be in the “on” position.A.canB.w】;主要考察你对虚拟语气等知识点的理解。[详细]
举一反三
--Who is late for class again?
--________ you ask? Tim, of course.
A.CanB.WouldC.CouldD.Need

题型:不详难度:| 查看答案
Mr. Li, a man calling himself Smith wants to see you. ________ he come in?
A.ShouldB.Can C.Shall D.Will

题型:不详难度:| 查看答案
—Are you in a hurry?
—No, in fact I’ve got plenty of time. I_______wait.
A.mustB.canC.needD.should

题型:不详难度:| 查看答案
_______ he was seriously ill, I wouldn’t have told him the truth.  
A.If I knewB.If I knowC.Had I knownD.Did I know

题型:不详难度:| 查看答案
---I’ve told her many times, and she still forgot about it!
---I understand. It’s true that she___ be very forgetful sometimes.
A.canB.shouldC.ought toD.must

题型:不详难度:| 查看答案
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