1) Sarah looks very happy. She ____ her Math test. a) must have passed b) might have passed c) can't have passed d) could have passed 2) She ____ there. Her car keys are still here. a) might have driven b) can't have driven c) could have driven d) must have driven 3) We don't know for sure that Alex broke the coffee table. It ____ the dog. a) might have been b) can't have been c) could have been d) must have been 4) Lucy ____ the concert, but we aren't sure. a) might have attended b) could have attended c) can't have attended d) must have attended 5) She ____ a lawyer but she decided to study accountancy instead. a) must have been b) could have been c) can't have been d) might have been 6) It was so hot yesterday. You ____ your jacket at home! a) must have left b) could have left c) can't have left d) might have left 7) Tom looks exhausted today. He ____ well last night. a) must have slept b) might have slept c) can't have slept d) could have slept 8) The door is open. Someone ____ to close it. a) could have forgotten b) can't have forgotten c) might have forgotten d) must have forgotten 9) He ____ at school, because he’s not even in town this week. a) can't have been b) might have been c) must have been d) could have been 10) I heard strange noises coming from the basement. It ____ the wind. a) must have been b) could have been c) can't have been d) might have been 11) I saw Mark playing soccer with his friends, and he was kicking the ball so well. He ____ a lot lately. a) must have practised b) might have practised c) can't have practised d) could have practised 12) Emma missed school yesterday, and I heard her cough on the phone this morning. She ____ sick. a) can't have been b) might have been c) must have been d) could have been

Modal Verbs for probability in the past

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