Relier Pairs PossibilitiesVersion en ligne revising modals for degrees of certainty in the past, present and future par Canan Schaerer 1 Someone's left their umbrella here. 2 Do you think Gran's alright? She's not answering her phone. 3 She must be his girlfriend. 4 Look! What's that? It can't be a plane. 5 I can't find my keys. 6 Someone was at the door a few minutes ago. 7 That's the doorbell. Do you think they're here already? 8 Happy birthday! Can you guess what it is? 9 I can't read this signature – can you make anything of it? 10 Eddie was very quiet this morning. 11 I'm starving! Is there anything to eat? 12 Who's that sitting next to Andrew? They can't be. They only left ten minutes ago and it takes an hour. Look, they're holding hands. It must have been the postman. He always comes at eight. He must have been tired – he flew back from London last night. It can't be a book - it's not heavy enough. Is it a video game or a DVD? You can't be hungry again! You've only just had lunch. You might have left them at work. It might be Laura's. She was in here earlier. It's flying too low. She might be having a nap. She often does after lunch The surname could be Smith. That looks like an 's'. It must be his dad. He looks just like him.