Помогите пожалуйста с заданием

Question

Помогите пожалуйста с заданием

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Answer 1

1.You must not drop litter in the street.
2. You have to be quiet in the countryside.
3. You mustn’t walk alone in cities.
4. You don’t have to be old to enjoy gardening.
5. You have to be a good swimmer to go water skiing.