.Complete the sentences using the modal verbs "can", "may", "must".
- The performance . (be over) as there are many people leaving the theatre.2. I don't believe that he said it. He . (say) such a thing. 3. I am sure they knew everything about it. Mary . (tell) them. She can't keep her word. 4. I am sure that she did not do anything of the kind. They . (take) her sister for her. 5. It is impossible that they should have refused to help you. They. (break) their promise.6.Perhaps it was true, I am not sure. She . (be ashamed) to tell you the truth. 7. .you really mean it? 8. There is no doubt that it was all prepared beforehand. He . (watch) you. 9. It is impossible. They. (leave) already. I was watching the door of the house.
