A primary source is an artifact, a document, diary, manuscript, autobiography, a recording, or any other source of information that has been created at the time under study. :)
I remember that answer being c. john Stuart mill
Hello there.....I don't think I can help you with the first exercise...but the 2nd one, I'll give it a go.
Answer:
1. It was she who wrote this report
2. Please start writing when you're ready
3. He fell asleep as the winners were announced
4. You must be on your best behaviour if you want tickets to the concert