I tried to telephone you (the other day) (the next day).You must have been out.选择

问题描述:

I tried to telephone you (the other day) (the next day).You must have been out.选择

选the other day
the other day意思为“不久前,前些日子”,
the next day 意思是“明天”
整个句子意思是,我前些日子打电话给你,但你肯定是不在家.
后面must have done 是对过去的推测..