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 _______ to stop eating fast food, it's too unhealthy. a) SHOULD b) SHOULDN'T c) HAVE 4) You _______ smoke here, it's forbidden. a) MUST b) MUSTN'T c) DON'T HAVE TO 5) You _______ to bring a coat, it's really hot in Hawaii! a) have b) must c) don't have 6) My uncle _______ work, he's rich enough to live without working. a) doesn't have to b) don't have to c) must 7) If you want to win the race, you _______ train harder. a) have b) mustn't c) should 8) In England you _________ drive on the left. a) must b) have to c) don't have to 9) I have so much homework. I ........... do now. a) must b) have to c) shouldn't 10) You _________ drink so much soft drinks. It’s bad for your health. a) should b) must c) shouldn't 11) You _________ come to the supermarket early, it opens at 9am. a) don't have to b) ought c) haven´t 12) You ___________be quiet if you go to the library. a) have b) have to c) shouldn´t 13) I think you _____________ brush your teeth three times a day, after meals. a) should b) ought to c) must 14) You ____________ talk on the phone while you drive. a) have not to b) must c) mustn´t 15) My brother ___________ to listen to my advice. a) should b) has to c) ought

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