You don’t have to / mustn’t / shouldn’t go to bed so late. It's not good for you.
You don’t have to / mustn’t / shouldn’t wear a school uniform in most Spanish state schools.
You must / mustn’t / needn’t come. I can do it without you.
You don’t have to /must / mustn’t copy during exams.
You don’t have to /mustn’t / shouldn’t be very tall to play football.
You must /mustn’t / needn’t be a good writer to win the Pulitzer Prize.
4. Rewrite the sentences using modal verbs
1. — Some people just don’t know how to sing. (be able to)
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2. — There’s a chance that she’s in the airport. (could)
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3. — I knew how to ride a horse when I was six. (could)
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4. — John isn’t sure if he is going to Turkey. (might not)
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5. — Do not block the emergency exit. (mustn’t)
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6. — It is dangerous to use mobile phones on the plane. (mustn’t)
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7. — It is necessary to fasten your seat belt for landing and taking off. (must)
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8. -It’s possible that he’ll be there to meet us. (may)
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9. — This is a surprise. Don’t tell anybody about it. (shouldn’t)
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