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