Juan didn’t arrive at the meeting on time (use must have + could have)
take the wrong bus - oversleep - forget the meeting - get stuck in traffic
María was very tired this morning. (Use might have + shouldn't)
work late - go to bed too late - wake up several times - have a stressful day
Pedro spent all his money and now he can’t pay the rent. (Use may have - couldn't have)
buy something expensive - not plan his budget - lend money to someone - forget about the rent
Laura didn’t reply to any messages all day. (Use must have + couldn't have)
have no battery - be too busy - forget to check her phone - not want to talk to anyone
The office is messy and the computer is still on. (Use may have + shouldn't have)
leave in a hurry - forget to turn off the computer - have an emergency - not finish work on time
Sofía was in a really bad mood this morning. (Use must have + shouldn't have)
have an argument with someone - be stressed about work - skip breakfast - receive bad news
We couldn’t find the document we needed for the presentation. (Use may have + should have)
leave it in another office - delete it by mistake - send it to the wrong email - not save the file properly
Marcos passed the exam with the best grade. (Use must have + couldn't have just)
prepare well in advance - get lucky with the questions - understand the topics perfectly
The restaurant we wanted to go to was closed. (Use may have + couldn't have)
have a private event - close earlier than expected - be under renovation - run out of food
