Student or Learner
I would like to check should the following sentence use "are" or "were" .
The following sentences are/were extracted from "ABC" documentMay I also check when do we use simple past and simple present in passive voice? I have checked on some English learning websites and the examples given for both simple past and present do not really explain which to use. Extracted from 1 of the website:
A letter is written by Rita
A letter was written by Rita