As a writer, after structural revising, I tend to revise grammically, and change any sentence errors, or change any phrases or words!!
Answer:
Warnings did the same thing
Who is, that's the way they are using it
The literary element is pacing/ pace of the story
I'm not quite sure how you want me to answer this but here...
'My three classes, biology, English, and reading are very hard but they are not as difficult as math.'
You do not capitalize classes unless it is a language or it as a number behind it (ex. Algebra 1.).
