4. L'orthographe correcte est doesn't
4. On préfèrera "aren't using" car l'expression est suivie de "at the moment".
5. On utilisera l'expression "doesn't want".
8. sit
9. has
10. hate
11. doesn't want
12. doesn't do (3e pers. du singulier)
13. think
14. am having (ou 'm having)
Bonne soirée !