1) Sarah looks very happy. She ... her Math test.  a) should have passed b) may have passed c) must have passed 2) The new assistant hasn't arrived yet. He ... the wrong train.  a) may have taken b) should have taken c) can't have taken 3) You ... sick yesterday. I saw you talking to our Geography teacher...  a) must have been b) could have been c) can't have been 4) I didn't pass my Literature test. I ... more.  a) could have practised b) must have practised c) should have practised 5) I ... a teacher, but I decided to become a vet. And, I'm happy with my choice! a) should have been b) could have been c) must have been 6) You ... to the school trip, it was awesome. We learned a lot about Italy! a) should have come b) could have come c) may have come 7) The astronomy teacher ... his job because his things are in his office.  a) may not have left b) shouldn't have left c) can't have left 8) I'm sorry to come without calling. I ... you a message.  a) could have sent b) should have sent c) can't have sent 9) Lucy didn't study the lesson. She ... tired. She's very responsible! .  a) may have been b) can't have been c) should have been 10) He knows a lot about medieval times. He ... a lot about it. a) must have read b) can't have read c) should have read

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