2.- a) the
community will be offered a good service by them
b) a good
service will be offered to the community by them
3.- a) the truth
has been told to them by nobody
b) they have
been told the truth by nobody
4.- a) we have
been promised a better salary by them
b) a better
salary has been promised to us by them
5.- a) the
police are given the names of local vandals by the children
b) the names of
local vandals are given to the police by the children
6.- a) we were
sent the legal documents by post by them
b) the legal
documents were sent to us by post by them