Put in the right reflexive pronoun. Example: Travis wrote this song by himself

1) Jack, plese clean up your oom by yourself.
2) Did she draw this beautiful picture by herself.
3) This trip could be dangerous, take care of yourself.
4) When my brother was 3 years old he couldn't to anything by himself.
5) Yeasterday I hurt myself when I was riding a bike.
6) They are good cooks. They can cook eveything by themself.
7) We arranged for Frankie's birthday party by ourselfes.
8) Do you need my help? - No, thank you. I'll do it myself.