Must, might, may, could, can39;t to complete the sentences: 1. Where

Must, might, may, could, can39;t to complete the sentences: 1. Where is David? He _________ (be) at school. It39;s 10 o39;clock now and classes begin at 8 2. She ______(think) that it is a good idea. It39;s crazy! 3. I39;m absolutely sure! They _________(arrive) tomorrow, because I got a telegram. 4. Are you joking! David _________(go) to Paris next week. He doesn39;t have enough money. 5. They _______(live) in New York, but I39;m not sure. 6. The concert _____________(be) wonderful tonight. Gergiev is a great conductor.