mustn
                    - Is Kate coming to the party this evening?—No, she _________ be at the party. She________ to the UK.
 - Is there anything special in the newspaper today?— Yes. People who drink wine ___ to drive after May Day.
 - Shall we meet at the station at 8 a.m.?—In fact, we __________. The train ________ until 10 a.m.