【判断题】【消耗次数：1】
Before he began to study in the university, he had worked in a company for three years.
①
正确
②
错误
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Before?he came to China, he??[填空]Chinese for three years.
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have learned
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had learned
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learned
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learning
【单选题】
3. He said he had ______ this subject for ten years.
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taught
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demanded
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would succeed
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had succeeded
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should succeed
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would have succeeded
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Had he worked hard, he _____ the exams.
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must have got through
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My grandfather had suffered from cancer for two years. It was no surprise when I was told that he had _____.
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passed off
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passed away
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passed by
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passed over
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He ________ Alice for ten years.
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married to
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has married to
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随机题目
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地下水位下降，引起土层产生自重固结；
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《公路桥涵地基基础设计规范》(JTGD63-2007)规定：当存在软弱下卧层时，要求桩端以下硬持力层厚度不宜小于几倍桩径(d)？
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2.0d；
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3.0d；
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4.0d；
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5.0d；
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群桩效应越强，意味着()
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群桩效率系η数、沉降比ζ越大；
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群桩效率系数η、沉降比ζ越大；
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持力层越硬，桩土相对刚度越大；
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