Turn into the passive voice: The teacher doesn't allow me to take the seat by the window. They are building a new school in this town

2. Turn into the passive voice.
1/ The teacher doesn't allow me to take the seat by the window.
2/ They are building a new school in this town.
3/ We shall discuss the matter in the afternoon.
4/ Are you going to post this letter?
5/ He has to pay the bills before the fifth of the month.
6/ No one has opened that box for the past hundred years.
7/ I can assure you that I will arrange everything in time.
8/ The enemy used to attack the bay.
9/ The fire has destroyed many houses.