You can use Modals of Deduction to talk about the present and the past.

Must, May and Could have different meanings and should not be used to say they mean the same.

You use MUST to guess what is the case when there is a lot of evidence.

Can and Can't can be used as possible and impossible.

Linda ______ have worked over time last night, she looks so exhausted!

We ______ have purchased some food for the cat, I just don't remember if I put it in the bag or not.

Some images in my head are not completely clear. I think I _______ have forgotten what his face looked like.

Liam had no doubts. He said he ______ have enrolled the girl to participate in the contest, as the payment is reflected in the system.

I don't think Jason participated in the crime. He ______ have killed that poor dog, he's such a sweet person!

Linda got married with Tommy in less than a month! They ______ have shared a very strong bond since they met.

I ______ have texted my ex last night while I was drunk. I have a lot of messages that confirm it!

Leo _______ have missed the train, but I'm not sure. Maybe he's just sick and won't come to class today.

Parker won the lottery a month ago. I'm sure he ______ have purchased a lot of tickets to be that lucky!

I _______ have stolen the jewels! I wasn't even here when that happened!

Did you take my wallet by any chance? I ______ have lost it! I think left it in my purse!

Otto ______ have lied to you. You know he's the most honest person alive!

The movie ______ have started yet! When I bought the tickets, they said it started at 11 pm and it's only 9!

I think I saw Robert driving his car this morning.

But that _______ have been my imagination, as he broke his right foot a couple days ago.

Suzanne and Dennis ________ have run away from home. All their belongings are here, nothing is missing.