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最佳答案：e sure about something做某事有把握Must be doing sth肯定要做某事
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最佳答案：oriental wah road qinghai new energy investment co., ltd
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最佳答案：finish writingIt is smart/wise for sb to do sthbe sure/certain about sthhappen t
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最佳答案：It's not sure that how long it will take the human beings to living in the botto
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最佳答案：Fighy without any hesitation for all time !
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最佳答案：答案不一 我再说下吧1.am not sure if/whetherideal home for2.was hitwasn't badly hurt3.Issp
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最佳答案：1.If you are not sure,then do not make a promise so easily because every promise