12. We painted the whole house by ourselves.
13. The house is very beautiful: they designed it by themselves.
14. I taught to play the guitar by myself. I never had lessons.
15. Mary’s children are too young to look after themselves.
16. An alephant hurt itself when it tried to get out of the zoo yesterday.
17. I don’t need any help. I can take care of myself.
18. My brother fell over and hurt himself when he was running for a bus.
19. Help yourself to some more coffee.
20. Mary and I didn’t enjoy ourselves at the disco last night.