1) They........................ watch their favorite series because the internet connection was gone. a) can't b) couldn't c) didn't can 2) It's Monday. Their assignment is due on Tuesday morning. They................... finish it today. a) must b) can c) may 3) The students are working hard. They............... be studying for an important test. a) should b) couldn't c) may 4) She's usually tired in the morning. She.............play computer games so late at night. a) shouldn't b) should c) could 5) Dani looks happy. He..............have gotten a good grade in the exam. a) must b) can't c) can

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