1) Where's Clare? Her bag's here and her computer's still on so she _____ gone home. a) must have b) might have c) can't have 2) I can't remember my password! But I _____ written it in my notebook as sometimes I do that. a) must have b) might have c) can't have 3) Sorry, I don't know if she's here or not. She was feeling ill so she _____ gone home. a) must have b) might have c) can't have 4) She _____ cleaned the whole house on her own in two hours. She must have had some help. a) must have b) might have c) can't have 5) Wow! Have you finished all that already? You _____ been hungry! a) must have b) might have c) can't have 6) Look! The window is open. The thief _____ got in through the window. a) must have b) might have c) should have 7) Sarah looks really pleased with herself. She _____passed her driving test this morning. a) can't have b) must have c) might have 8) I’m sorry for shouting at you – I _____ raised my voice. a) mustn't have b) couldn't have c) shouldn't have 9) John _____ gone on holiday. I saw him in the morning. a) can't have b) mush have c) might not have 10) You _____tried to fix the window yourself. You might have fallen out and broken your neck. a) mustn't have b) shouldn't have c) can't have

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