Incorrect
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Correct
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He should not hurry; there is plenty of time.
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He need not hurry; there is plenty of time.
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The case is serious; you should consult a good doctor.
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The case is serious. You ought to consult a good doctor.
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When I was young, I had worked for twelve hours.
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When I was young. I used to work for twelve hours.
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Should you care for a glass of milk?
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Would you care for a glass of milk?
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You should not go to college today. The teachers are on strike.
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You need not go to college today. The teachers are on strike.
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I went to him so that I should warn him of the coming danger.
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I went to him so that I might warm him of the coming danger.
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We eat so that we should live.
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We eat so that we may live.
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One must serve one’s country
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One ought to serve one’s country.
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You may not go there personally; just send someone.
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You need not go there personally; just need someone.
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Can I borrow your pen?
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May I borrow your pen?
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He ran fast so that he could catch the bus.
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He ran fast so that he might catch the bus.
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My boy, you must not have spoken this.
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My boy, you should not have spoken this.
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I cannot accept your challenge; you are too strong.
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I dare not accept your challenge; you are too strong.
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A doctor should do everything possible to save a patient.
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A doctor ought to do everything possible to save a patient.
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Had he worked hard, he might have passed.
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Had he worked hard, he would have passed.
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With the help of dictionary, you may learn new words easily.
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With the help of a dictionary, you can learn new words easily.
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I was afraid that if I asked him again he could refuse it.
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I was afraid that if I asked him again, he might refuse it.
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He was working hard so that he should get good marks.
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He was working hard, so that he might get good marks.
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When would you accompany me to Kolkata?
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When will you accompany me to Kolkata?
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He played with me when he was a boy.
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He used to play with me when he was a boy.
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