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