62._________A. foundB. workedC. turnedD. set

He won the scholarship. He ______ hard these terms.A．should have workedB．must have workedC

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He felt very tired because he ______ 18 hours without a rest.A．had workedB．workedC．was wor

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Joan said she ______ that there was something wrong with the machine.A．had foundB．has foun

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Nothing but some magazines______in her handbag.A．were foundB．was foundC．has foundD．had fou

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The term " usher in" in Paragraph 4 can be replaced by______.A．foundB．createC．leadD．introd

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______harder, he would have got through the exams.A．Had he workedB．He had workedC．Should h

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He told me that he ____ in Naples the previous year.A、has been workingB、has workedC、had

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