1, The wine should be opened by you about three hours before you use it.
2, Nails must not be hammered into walls without permission.
3, Bicycles must not be left in the hall.
4, Books can be kept by members for three weeks.
5, Their complaints should be sent to the main office by people.
6, All the switches must be turned off before leaving the room.
7, An appointment must be made by you.
8, The car might be stolen by someone.
9, The room must be kept tidy.
10, The problem cannot be solved by them.
11, The picture cannot be restored by us.
Ex. 3:
1, B – is cleaned
2, A – are studying
3, C – was broken
4, B – called
5, A – was injured/ wasn’t needed
6, D
