1.The books ought to be returned by you to the library before the 1st of March.
2.Cars must not be parked by people in front of that building.
3.He ought to be paid by them.
4.Butter should be kept by you in the fridge.
5.A school can be built in five months by them.
6.The police should be informed by you.
7.A lot of forms will have to be filled in by you.
8.The old car can't be sold by them.
9.That old clock ought to be repaired by you.
10.This article needn't be translated by you.