1) vivimos
This is the nosotros form of the verb vivir.
2) Pon or Ponga
Pon is the informal command, and based off of the last question, I believe you are supposed to be using informal commands. However, if you are supposed to give the formal command, it is ponga.
3) Limpia
This is the informal command for the verb limpiar, formed by using the present tense el/ella/usted form of the verb.
4) You use the formal (Ud.) form of the verb.
This is how informal commands are formed.
