Read the theory. Find an example in the text. What does it express: speculation or deduction? • Tom isn't in the library. He must have gone home. (I am sure it happened. - deduction) • Kelly isn't at home. She might/may/could have gone to the supermarket. (I am not sure. - speculation). You can't have seen Berik at work this morning. He's on holiday. (I am sure it didn't happen. - deduction)