I never have to ..., I have to remember to ..., If you take a plane, you must ..., In school, you can´t ..., On a highway, you can´t, When I was four, I didn´t have to ..., My parents say I shouldn´t ..., At my age I should ..., When you run, you ..., During exams, you can´t ..., In a zoo, you shouldn´t ..., When you arrive in a foreign country, you ..., Children don´t have to ..., I ... improve my English., You should ... at least three times a week, On the weekend, we ..., In certain offices, employees have to ....

I2 - Modals (obligation and advice)

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