When we write about something we should write what we know. What is true, for example, when writing about a person places we should have knowledge on the subject, we write?
When we are writing about something. We should write what we know. What is true, for example, when writing about people, places, we should have some knowledge of what I am writing.
When we write about something. Should we write what we know, what is true, such as the time to write about people, places, we should have a knowledge of what we write.