Mum: yes,you do.you should/dont have to take to blue one.and you shouldnt/should pack these sandals ben: oh,mum.i hate sandals. mum: oh,ben! and your sister is packing too many clothes.grace,you dont have to/must pack all the clothes in your wardrobe! pack your books,too'd you have to/shouldnt do some homework on holiday. grace: but,mum,i dont have to/mustnt study this week. mum: ok.you can have one week•s break