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最佳答案：weren,t
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最佳答案：肯定Yes,I'd love to.That's a good idea.Why not?否定Sorry,...I'd love to,but...
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最佳答案：1.Yes,you must.No,you need't.一般没有用need提问的2.be suppose sb.do sth.3.没有Who答案吗?是who才
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最佳答案：1.May I的回答一般用Yes,you can.或No,you can't.2.success successful succeeda success一个成功
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最佳答案：用 no,you can't
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最佳答案：I can sing-----Can you sing?-----I can't singWe went to the park yesterday---We
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最佳答案：Was Simon's father a compute engineer three years ago? Yes, he was. No, he wasn'