1) Now I understand the story. (to explain)
The story has been explained to me
2) it is not cold here now.(to close)
I have closed the window
3) I am not hungry. (to have dinner)
I have had dinner
4) I cannot tell you where my Headteacher lives.(to forget)
I have forgotten where my head teacher lives.
5) I cannot show you a picture of my cousin.(to lose)
I have lost the picture of my cousin
6)Now I can show you the picture of my cousin.(to find)
I have found the picture of my cousin
7) We can begin our lunch now.(to buy)
We have bought some food