1) Could
2) Couldn’t
3) Can
4) Can
5)Couldn’t
6) Couldn’t
7) Could
8) Can’t
9) Couldn’t
10)Could
They are both grammatically correct it is just that the former is using perfact past. As sited from <span>Cambridge Grammar of the English Language "</span>The preterite perfect [i.e. the past perfect] locates the writing anterior to an intermediate time which is anterior to the time of speaking - it is doubly anterior (140). "
Is this a multiple choice question?
Answer:
Write down sources as you go, read over your thesis, and don't stress over the time minimum. Post your essay after it's done and have peers go over it.
Explanation:
Writing down sources as you go helps you not have to read back when you have to cite them. It just makes research and citing easier. Reading over your thesis is just in the directions and it can help you write off of your own words, giving you a head start. Lastly, honestly 2 hours for a rough draft is absolutely insane, strive to do your best rather than how long it takes you. If you post your essay after you're done I might be able to help you proofread it, if I find your account again. Good luck!