1. You are certainly joking. I am sure he was lying. Corrigé : You must be joking - He must have been lying.
2. You will probably be surprised. Maybe he gave her a diamond ring. Corrigé : You may be surprised. He may have given her a diamond ring .
3. Perhaps we’ll never see each other again. I don’t know where she is. Perhaps she is waiting for us at the airport. Corrigé : We might never see each other again - She might be waiting for us.
4. I am sure she is not as old as you say she is. I am sure she’s not sleeping, not at this time of day !
I am sure I have not lost his address. Corrigé : She can’t be as old - she can’t be sleeping - I can’t have lost .
5. I suppose he speaks English fluently : he has lived for three years in London. They are almost certain to have arrived now. Corrigé : He should speak - they should have arrived.
