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最佳答案：How long can I still be a child?How long can I still be so happy?
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最佳答案：填as long as
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最佳答案：How long has he been to Beijing?很高兴为你解答!老师祝你学习进步!望采纳,多谢你的问题!^_^
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最佳答案：how long do you feel like this
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最佳答案：how ofteh does he go to the cinema?
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最佳答案：How often do you have your salary raised?
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最佳答案：飞车100级以上领多少生日点券
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最佳答案：How long have you been using the dictionalry?one year.
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最佳答案：keep (maintain) record
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最佳答案：How long have you been working togethe