Rephrase using correct modal verbs (may, might, could, must, can’t) and the appropriate Infinitive to speculate about the present, past and future:
1. Perhaps the price of petrol will risein the next few months.
2. There’s a lot of noise from room 212. I’m sure they are having a party.
3. Perhaps, he knows the address of the company butit’s unlikely.
4. I’m sure she isn’t looking for a new job already. She only started work a week ago.
5. They arrived here earlythis morning. I’m sure they have been waiting for hours.
6. I’m not sure why the Ukrainian delegation wasn’t atthesa lesconference.Perhaps they were delay edatt heairport.
7. I’m sure you didn’t see Mr Green at the presentation, because he wa sin hospital att hat time.
8. I can’t gett hrough to our office in Kharkiv. Perhaps they are having problems with their fax machine.
9. Our lawyer thinks that perhaps it will take a long time tod rawup the contract.
10.Perhaps hew ill bepromoted later, but I doubtit.