...and after you write your paper, let us proof-read it for you.
For example, instead of writing "What to write on my paper?", you should have written, "What to write my paper on?", or better yet, "What topic should I write my history paper on?"
For example, instead of writing "What to write on my paper?", you should have written, "What to write my paper on?", or better yet, "What topic should I write my history paper on?"

all kinds of good stuff you could do this on.
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