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最佳答案：I have been to Shanghai for three times.Computer has been invented for centuries
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最佳答案：I have ever been to beijing 我去过北京，ever一般和现在完成时连用“ have ever ” （采纳请给好评哦，您的好评是对我最大
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最佳答案：When you have finished the work, you can get your pay.
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最佳答案：He has become a hero.
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最佳答案：上香!1.I have put the cage in the garden.2.I have lost my watch.3.He has fogotten
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最佳答案：I have tried many times to pass the test.
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最佳答案：I have already finished my homework.My mom has cooked dinner for me.I have washe
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最佳答案：she has always love animals
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最佳答案：I have been here for 3 years.for延续,加时间段.I have been here since 2009.since加时间点.th
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最佳答案：I have lived Beijing fof 13 yeras .I have studied English for 5 years