I'm not ______ (授权、许可）to answer your questions.
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The end of this month is their ______ (自愿接受的；自己主动承担的） deadline for finishing their project.
Life is ______ (内在的；固有的）uncertain, so don't waste your energy trying to predict the future.
That was a ______ adventure story.
He ______ that he never had any time to himslef.
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