I really need to know if everything is correct in my last post. I hope someone can check it.

Thank you very much, Damon. Here are a few more sentences I need to check.In particular, a need to know which word choices are possible.

1) O’Brien even threatens to use rats against him (threaten he will use rats against him). Rats are the thing Winston most fears.
2)If I were asked to complete this sentence with “more” or the “most” which of the two would you use:
3)George Orwell and Ernest Hemingway were among the MORE (or the most) famous foreigners participating in the efforts against the fascists.
4)He experienced poverty first hand beginning to live in common lodging houses and seeking the company of destitute people. (by living in …… and by seeking.. are both possible?)
5)I won't check your paragraphs any longer if you keep using block capitals instead of cursiv.
6) The novel occurs (takes place/BUT not is set) on a cold wind day in April 1984. It deals with/is about/tells of (BUT NOT speak about/tells about) a frail, thirty-nine-year-old man, called Winston Smith.
7) He lives in a small apartment with a telescreen (which contains a telescreen,which is equipped with a telescreen: which are possible?). The telescreen is a camera and a television at the same time.
8) It recors images and sounds at Winston's house to control his life.
The sound of the telescreen can be turned down but not turned off completely.

To check the correctness of your sentences, I'll go through each one and provide feedback:

1) O’Brien even threatens to use rats against him. Rats are the thing Winston most fears.
- This sentence is correct. The phrase "threaten to use rats against him" is grammatically accurate.

2) If I were asked to complete this sentence with "more" or "most," which of the two would you use?
- In this case, you would use "more." The correct sentence would be: "George Orwell and Ernest Hemingway were among the more famous foreigners participating in the efforts against the fascists."

3) He experienced poverty firsthand by living in common lodging houses and by seeking the company of destitute people.
- Both options are possible in this sentence. You can either use "by living in" or "by seeking" to describe his firsthand experience of poverty.

4) I won't check your paragraphs any longer if you keep using block capitals instead of cursive.
- This sentence is correct. It conveys the message clearly and uses the appropriate grammar.

5) The novel takes place on a cold wind day in April 1984. It deals with a frail, thirty-nine-year-old man called Winston Smith.
- In this sentence, both options are possible. You can use "occurs" or "takes place." However, "is set" would not be appropriate in this context. Additionally, you can use "deals with" or "is about" to describe the main theme of the novel. However, "speak about" or "tells about" would not be suitable.

6) He lives in a small apartment with a telescreen, which contains a telescreen and is equipped with a telescreen.
- In this sentence, the first option is grammatically correct. You can use "which contains a telescreen" to describe the telescreen in his apartment. However, saying "which is equipped with a telescreen" would be redundant since it is already established that the telescreen is present in the apartment.

7) It records images and sounds at Winston's house to control his life. The sound of the telescreen can be turned down but not completely turned off.
- This sentence is correct. It uses the appropriate grammar and effectively conveys the intended meaning.

To review, most of your sentences are correct. However, there were a few word choices that could be improved, as explained above.