Read the situations and write a sentence for each one using the correct modal form.

1.You definitely need to have a licence to fly a plane.
2.I'm thirsty. I'm going to ask you for some orange juice.
3.You don't need to buy bread. There's some in the kitchen.
4.It is necessary for you to leave the party at 11 o'clock
5.There's no obligation for you to buy her a birthday present.​