1) You ______ be quiet in the library. People are studying! a) can't b) must c) has to 2) You ______ have a passport to travel abroad. a) have to b) don't have to c) mustn't 3) Sally ______ play the piano very well. She is really good at it. a) mustn't b) doesn't have to c) can 4) Sam ______ take a pain killer because he has a headache. a) must b) can't c) mustn't 5) You _______ water the flowers because it's raining. a) must b) mustn't c) don't have to 6) ______ I use your laptop please? a) Must b) Should c) Can 7) Megan ______ clean her room. It's a mess! a) doesn't have to b) must c) mustn't 8) Not all birds _____ fly. a) have to b) can c) must 9) You ______ eat a lot of candies. They are not good for your teeth! a) mustn't b) must c) have to 10) We ______ bring our swimsuits to the swimming pool. a) can't b) don't have to c) must

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