Sabes
because conocer is used more when you personally know someone/thing
saber is used when you know facts about someone or something.
se is conjugated in the yo form
sabes is conjugated in the tu form so this one is correct because you are asking someone if they know where the party is.
<h3>Fill in the chart with all of the forms of the following verbs, including the meanings.</h3>
vestirse- to get dressed : me visto, te vistes, se viste, nos vestimos, os vestís, se visten.
ponerse- to put on : me pongo, te pones, se pone, nos ponemos, os ponéis, se ponen.
divertirse- to have fun : me divierto, te diviertes, se divierte, nos divertimos, os divertís, se divierten.
acostarse- to go to bed : me acuesto, te acuestas, se acuesta, nos acostamos, os acostáis, se acuestan.
dormirse- to fall sleep : me duermo, te duermes, se duerme, nos dormimos, os dormís, se duermen.
Alli esta is grammatically correct. It is correct because alli esta means "there is" and in your example, There is the first floor, sounds better. The first floor is there doesn't sound correct to me. Hope this helps.
Answer:
yo voy ustedes van
los niños van nosotros vamos
tu vas. ella va