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John ... the train, otherwise he would have been here by now.
1. must have missed
2. can't have missed
She ... attention during the lecture, otherwise she would have understood the material.
1. must have been paying
2. can't have been paying
They ... too fast, otherwise he wouldn't have crashed into the tree.
1. must have been driving
2. can't have been driving
They ... really excited about the trip, because they started packing weeks in advance.
1. must have been
2. can't have been
He ... serious about quitting his job, because he always talks about how much he loves it.
1. must have been
2. can't have been
Sarah ... feeling sick, because she left the party early without saying goodbye.
1. must have been
2. can't have been
They in the office yesterday, because the lights were off and the door was locked.
1. must have been
2. can't have been
She ... the one who stole the files, because she was in a meeting with us at the time.
1. must have been
2. can't have been
They ... money for a long time, because they were able to afford the down payment on the house.
1. must have been saving
2. can't have been saving
He ... about his qualifications, because he passed all the required tests and interviews.
1. must have been lying
2. can't have been lying

Części mowy : i inne zagadnienia > Czasowniki modalne > Czasowniki modalne w przeszłości - must have / can't have - spekulacje (2)