Three things you should do in the morning
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Three things you don't have to do if you shop online
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Three things you mustn't do in class
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Three things you have to do every day
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Three things you have to do if you want to improve your English
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Three things you don't have to do when you're on holiday
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Three things you mustn't do in a cinema
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Three things you ought to do at home
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Three things you mustn't do in a library
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Three things you ought to do if you have a pet
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Three things you shouldn't do in a park
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Three things you must do before you get on an airplane
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Three things you don't have to do when you're young
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Three things you shouldn't do when you're driving a car
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