The same using Already.
Example:Water the flowers,please.
I have already watered the flowers.
1.Wash your hands,please.
2.Why don't you clean your shoes?
3.Brush your teeth ,will you?
4.That's a wonderful movie.Do you want to watch it?
5.When will you finish your panting.

1. Wash your hands, please.I have already washed them.2.Why don't you clean your shoes?I have already cleaned them.3.Brush your teeth, will you?I have already brushed them.4.That's a wonderful movie. Do you want to watch it?I have already watched it.5.When will you finish your painting?I have already finished it.