5 Choose the correct words.
1 You mustn't/ shouldn't leave your
motorbike there. It isn't safe.
2 He's lucky because he mustn't /
doesn't have to wear a school uniform.
3 We mustn't / don't have to use mobile
phones. It's against the rules.
4 Thave to / should walk to school because
there isn't a bus.
5 Young people must / should go to school
until the age of fifteen. It's the law.
6 You mustn't / don't have to cheat in exams.​