Aidez moi pour l'exercice d'anglais !

have you been to Africa?
HAVE YOU TIDiED YOUR BEDROOM,
have you bought a new computer?
HAVE YOU FINISHED PACKING?

HAVE YOU PREPARED DINNER?

1) Are you going to Africa?
2) As you tidy up your room?
3) Have you changed your computer?
4) (je ne sais pas pour celle là)
5) Have you prepared the table and put everything on the table?