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) MIGHT 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) Donald Trump _______ 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) might b) mustn't c) should 8) In England you _________ pay taxes  a) must b) can c) don't have to 9) I _________ remember to get a present for my best friend Daisy a) must b) have to c) shouldn't 10) You _________ drink so many fizzy drinks. It’s bad for your health. a) should b) must c) shouldn't 11) You _________ come early, the meeting was cancelled. a) didn't have to b) ought c) haven´t had to 12) You ___________be quiet if you go to the library. a) must 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 16) Paul is behaving in a very unusual way. I think he ______ again. a) can't drink b) can be drinking c) might be drinking 17) If Suzan said that, it ______ true. She never lies. a) might be b) must be c) can be 18) Sorry, but I'm not Connor. You ______ me for someone else. a) might be confusing b) must confuse c) must be confusing 19) You have walked for ten hours. You ______ exhausted. a) can be b) can't be c) must be 20) He ______ his son, they look completely different. He must be the milkman's son. a) might be b) can't be c) must not be

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