I tidy my room every day.
I tidied my room yesterday.
I will tidy my room tomorrow.
I am tidying the room now.
I was tidying the room at 5 o'clock yesterday.
I will be tidying the room at 5 o'clock tomorrow.
I have already tidied the room.
I had tidied the room before he came.
I will have tidied the room before he comes tomorrow.
I have been tidying the room for 2 hours already.
I had been tidying the room for 2 hours when he came.
I will have been tidying the room for 2 hours when she comes tomorrow.