Complete the sentences with may or must.
1. Carol... have been waiting for us since morning.
2. Helena, you... have gone to the cinema a lot. You know a lot about films, actors and actresses.
3. She... have spoken to the manager but I'm not sure.
4. Perhaps he went to the beach by another way. I... have missed him.
5. I left my car under the NO PARKING sign; and now it's gone. It... have been stolen. — Not necessarily. The police... have driven it away.
6. Good-bye and thank you. Perhaps we... see each other again some time.
7. The waiter... have misunderstood the foreigner and brought him a wrong dish.
8. I wonder how the fire started. — Oh, somebody... have dropped a lighted cigarette. Or it... have been an electrical
fault.
9. It was the depth of winter and we had to wait 18 hours in an unheated station. — You... have been frozen by the time the train arrived.
10. They... be working at the same problem.
11. "Oh, you!" he said as he looked up in surprise. He... have forgotten my name.
12. I didn't see Jim but I knew for sure that he... be waiting
somewhere.
13. Is he likely to come again? — He.... I really don't know.
14. I... be very stupid but I don't seem to be able to understand what you are saying.
15.1 found this baby bird at the foot of a tree. It... have fallen
from a nest.