must, mustn't, have to, don't have to/needn't
5 Choose the correct answers.
1 You must / mustn't finish your breakfast or you'll be hungry
later.
2 I must/mustn't leave before 8.30 or I'll be late for school.
3 You must / mustn't eat that bread. It's a week old!
4 In football, you must / mustn't touch the ball with your hand.
5 You must / mustn't visit Paris some time. It's a wonderful city.
6 You must / mustn't go near the edge of the cliff. It's very
dangerous.​