<h2>1. It's correct.</h2>
Let's analyze this sentence and say why this is correct. First of all, this sentence matches the subject pronoun Ustedes (Uds.) that can be translated into you all in English. So conocen matches this subject pronoun as well and comes from the verb conocer (to know). Therefore, we can give a response to this question as follows:
<em>- ¿Conocen Uds. a la niña con el abrigo rojo?</em>
<em>- Sí, la conocemos.</em>
<h2>2. Correct answer.</h2><h3>
- pregunta qué talla llevo.</h3>
The verb to ask has several meanings and can be translated according to context in Spanish. This can be used to ask a question, to get information from someone, when inviting someone to do something, when expecting someone to do something, etc. Here ask is translated as the verb preguntar because someone asks a question. Therefore, pregunta matches the third person singular in the simple present.
<h2>3. Correct answer.
</h2><h3>Ella sabe que necesito más ropa.
</h3>
Ella is the subject pronoun that matches the third person singular and can be translated as she in Spanish. Here we use the verb saber because this sentence talks about information, that is, she knows that I need more clothes, so this is an information. In this way, sabe is the conjugation of the verb saber that matches the third person singular in the simple present.
<h2>4. Correct answer.</h2><h3>
Pedimos ropa nueva </h3>
The verb ask for can means preguntar por, pedir, solicitar, exigir. Here we choose pedimos because the verb pedir is used when you need or require something and you expresses it. Moreover, pedimos and preguntamos are the only options that matches the subject pronoun nosotros (we), but according to the previous statement, we choose pedimos.
<h2>5. Incorrect</h2>
The correct sentence is tú conoces a María. This is true because conoces is the conjugation of the verb conocer that matches the subject pronoun tú and the main use of this verb is to talk about familiarity or an acquaintance with a person, thing or place. So here you are familiar with a person called María.
