6.
2) You must escape from the prison.
3) You mustn't open any black doors.
4) You mustn't let the guards catch you.
5) You must climb up the tower.
6) You must rescue the princess.
7.
2) He has to work.
3) Lis has to get up early tomorrow.
4) He has to wear a uniform.
5) You don't have to hurry.
