Gatsby was rude, and it made Nick suspicious.
"I think he hardly knew what he was saying, for when I asked him what business he was in he answered, “That’s my affair,” before he realized that it wasn’t the appropriate reply.
“Oh, I’ve been in several things,” he corrected himself."
Answer:

Explanation:
Given sentence,
Sabin slept at 9 pm.
To change this sentence into negative, add did not after the subject .
Sabin <u>did</u><u> </u><u>not</u> sleep at 9 pm.
Note: While changing positive sentences into negative, V² takes did ( V² = did + V¹ )
Hope I helped!
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“I believe a longer spring break will help students perform better in school. After a week away from their studies, students will be refreshed and able to concentrate until the end of the school year”
This states your stance and reasoning.