№3 put the correct modal verb: must/ have to /mustn’t / don’t have to / doesn’t have to.
we are going to drive for six hours. we get something to eat!
i watch television all the time. i stop.
you get up early on holidays.
this window is broken. you open it.
mr brown is a very rich man. he work.
it’s his sister’s birthday tomorrow. he her a birthday present!