1) He studied until the morning. He _______ be tired. a) can't b) must c) might d) could 2) This t-shirt is too big. It ______ be mine. a) must b) could c) can't d) might 3) This building is shaped like a piano. It ______ be used as a concert hall. a) could b) must c) can't 4) A: Where is Sarah?  B: I am not sure but she is coming. She ______ be on the bus or taxi. a) can't b) must c) might 5) I called his house, but he didn't answer. He ______ be at home. a) might b) must c) could d) can't 6) Everyone is wearing a jacket. It ______ be cold. a) might b) must c) can't d) could 7) She doesn’t know if she will cook dinner tonight. She ______ cook. a) must b) can't c) might 8) The last time I spoke on the phone was in the morning. My phone ______ be in my bedroom. a) must b) might c) can't d) could 9) Perhaps he will go to the cinema tonight. He ______ to the cinema. a) can't b) could c) must 10) She left the party to sleep early. She ______ go to school tomorrow. a) might b) must c) can't d) could 11) Everyone is wearing sunglasses. It ______ be cloudy outside. a) can't b) must c) might d) could 12) He definitely knows how to fix my bike. He ______ know how to fix it. a) might b) could c) can't d) must 13) She might be at home, or she ______ be at the office. a) must b) could c) can't 14) Maybe I will have dinner late tonight. I ______ have dinner late. a) might b) must c) can't 15) You're almost the same age. She ______ be your mother. a) must b) could c) might d) can't

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