Question

нужно в кротчайшие сроки

Answer 1

1.  The work will be finished by us on time.
2.  The house was built by them in 2011.
3.  The new children's  books were being sold in that shop  when I entered it yesterday.
4.  It has been explained to us by the teacher.
5.  Sugar is added to sweets by us.

Answer 2

This work will be finished on time by us
This house was built in 2001 by them
New children's  books were  being sold  in that shop  by them when i entered it yesterday
It has been explained us by the teacher 
Sugar is added to sweets by us