-Can I have some more tea?
-Sure. Help (me/yourself) !
The ballet (himself/itself) wasn't very good but the music was fantastic.
It was your fault! You can't blame (her/yourself) !
To save a money we built a house (ourselves/each other) .
How long have you known (yourselves/each other) ?
My mother didn't worry about her children. They knew how to look after (them/themselves) .