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题目
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The manager ______ the worker how to do it, or the accident couldn’t have happened.
A.couldn’t have toldB.ought to tell
C.could have toldD.mustn’t have told

答案
A
解析
考查情态动词的用法:    A. couldn’t have told过去不可能告诉了,B. ought to tell应该告诉      C. could have told本可以告诉却没有告诉,D. must接完成式不用否定,句意是:经理不可能告诉工人怎么做的,否则事故就不会发生了。选A。
核心考点
试题【The manager ______ the worker how to do it, or the accident couldn’t have happen】;主要考察你对虚拟语气等知识点的理解。[详细]
举一反三
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题型:不详难度:| 查看答案
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题型:不详难度:| 查看答案
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题型:不详难度:| 查看答案
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题型:不详难度:| 查看答案
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题型:不详难度:| 查看答案
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