1) I'm sorry, I _____ go to the party with you. My son is sick. a) must b) can't c) mustn't 2) I ............. go to the doctor. I’m feeling ill. a) must b) can c) should 3) Everybody ________ be asleep. The lights are all off. a) can b) must c) mustn't 4) You ........... be home by 10 o’clock. I’ll be waiting for you. a) must b) shouldn't c) can't 5) I..................study for the test if I want to pass a) mustn't b) can c) must 6) I.................climb trees, I'm very good at sports. a) can b) should c) must 7) They ....................smoke here. It's a museum a) shouldn't b) mustn't  c) can´t 8) where are my glasses? I ........ find them. a) can't b) must c) shouldn't 9) I .................listen to my teacher if I want to learn modal verbs a) can b) mustn't c) must 10) Students ............ talk loudly in the library. a) mustn't b) shouldn't c) can't

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