问题标题:
【________regularexerciseisveryimportantit'sneveragoodideatoexercisetooclosetobedtime.A.IfB.AsC.AlthoughD.Unless】
问题描述:

________regularexerciseisveryimportantit'sneveragoodideatoexercisetooclosetobedtime.

A.If

B.As

C.Although

D.Unless

刘雅轩回答:
  C
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