If you wanted to say “you” when speaking to one person informally, you would use ____ as the subject pronoun.
Tu, you
if you wanted to talk about yourself and someone else, you would use ________ as the subject pronoun.
Nosotros, us
The answer is "peor" because it describes the verb "es" [infinitive: ser].
It's ustedes estudian en la biblioteca
The answer is true i'm positive
