1) Firefighters _______ wear a uniform. a) MUST b) HAVE TO c) DON'T HAVE TO 2) I ________ stop bitting my nails. a) MUST b) HAVE TO c) MUSTN'T 3) You _______ smoke here, it's forbidden. a) MUST b) MUSTN'T c) DON'T HAVE TO 4) You _______ to bring a coat, it's really hot in Hawaii! a) have b) must c) don't have 5) Donald Trump _______ work, he's rich enough to live without working. a) doesn't have to b) don't have to c) must 6) If you want to win the race, you _______ train harder. a) can't b) mustn't c) should 7) You _________ drink so many fizzy drinks. It’s bad for your health. a) should b) must c) shouldn't 8) I think you _____________ brush your teeth three times a day, after meals. a) should b) ought to c) must 9) You ____________ talk on the phone while you drive. a) have not to b) must c) mustn´t 10) Students ________ study hard for the test. a) must b) has to c) can

Intermediate - MODAL VERBS

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