1) You ______ be quiet in a library. a) should b) must c) shouldn't d) mustn't 2) You look tired. I think you ______ sleep. a) should b) must c) shouldn't d) mustn't 3) You ______ be over 18 to drive a car. a) should b) must c) shouldn't d) mustn't 4) You ________ forget to wear your mask when you go out. a) must b) should c) mustn't d) shouldn't 5) You _______ wait for the light to turn green before you cross the street. a) should b) must c) shouldn't d) mustn't 6) You __________ play too much video games. It's bad for your eyes. a) should b) shouldn't c) must d) mustn't 7) You _________ eat healthy and exercise regularly. a) should b) shouldn't c) must d) mustn't 8) -I have a stomachache. +You __________ see the doctor. a) should b) shouldn't c) must d) mustn't 9) We .......... eat nutritious food to stay healthy. a) should b) shouldn't c) must d) mustn't 10) Students......... wear their uniforms in school. a) should b) shouldn't c) must d) mustn't

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