Поставить только can/can' t or must/mustn' t !

i will be a bit late today, so please don' t forget: you go to the supermarket. i do the shopping list is one the table. you 3 feed our pets. you 4.. watch tv but you finish your homework first. if you do it yourself, i will help you later. peter, you go to your friend' s house but you be back at half past six. you forget that aunt agatha is comig to visit us today so you tidy your rooms! i' ll be bact at 6.30. you call me if you need anything.