In Mexico Elementary students ________ wear uniforms at school., must, have to, You ________ clean the floor. I've already done it., don't have to, mustn't, You _______ drop litter here. It's against the rules!, don't have to, mustn't, Sue _______ work long hours because she is a doctor., have to, has to, You see a sign at a restaurant. "You _______ wear a mask if you want to enter the restaurant.", have to, must, Tom is lucky. He ________ get up early on Monday mornings because he starts school at 10 a.m, doesn't have to, mustn't, You _______ drink alcohol in the classroom., don't have to, can't to, can't, You __________ be an expert to use the basic functions of program., mustn't, don't have to, The museum is free. You _________ pay., don't have to, mustn't, You ________ park here. It's an emergency exit., don't have to, mustn't, Alfred _______ wake up early because he starts work at 7:00., can, doesn't have to, has to, In my English course, I _______ have 4 absences., can, have to, can to

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