1) It's Monday. Their assignment is due on Tuesday morning. They ........... finish it today. a) must b) can c) may 2) The students are working hard. They .......... be studying for an important test a) should b) couldn't c) may 3) She's usually tired in the morning. She ......... play computer games so late at night a) shouldn't b) should c) could 4) Dani looks happy. He ......... have gotten a good grade in the exam. a) must b) can't c) can 5) With luck, tomorrow ........ be a sunny day. a) must b) could c) can 6) You are speaking very quietly. I ........... hear you well. a) couldn't b) mustn't c) can't 7) "Whose laptop is this?" "I'm not sure. It ......... be Olivia's." a) has to b) must c) might 8) We ......... pay anything. The concert is free. a) mustn't b) didn't need c) don't need to 9) No way! That .......... be Mr. Roberts. He's not old enough. a) mustn't b) may not c) can't 10) What are you doing? Don't you know that you ........... write on the desks? a) don't have to b) mustn't c) needn't 11) Adella ....... come over tomorrow. She'll call and let us know. a) needs b) may c) must 12) We .......... buy tickets for the football match. a) must b) need c) have 13) You ...... eat so much chocolate. It's not good for you. a) don't have to b) mustn't c) shouldn't 14) "Whose is this bag?" "I don't know, but it ....... belong to Yuta. a) could b) may c) should 15) I ...... help you, but I don't want to. a)  can b) could c) might

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