Question

The paper published the news change the sentence into passive voice

Answer 1

The news was published by the paper

Answer 2

Given sentence is in Active voice :-
The paper published the news.

So we have to convert it into passive voice.

Given sentence is in simple past tense.

Rule for simple past passive :-
Obj + was/were + verb third form+ by + subject.

Using this we have the answer as

$\textbf{The\:news \:was\:published\:by\:the\\paper.}$