How do you make this sentence “ Tú trabajas en la biblioteca.” To a question in Spanish

Nosotros al lado de un lago. vivimos vivemos vivir viven ¡ la mesa! pongo ponga pone pon ¡ las ventanas! limpia limpian limpias limpiar which would be true for forming an informal command? you use the infinitive of the verb. you just need to change the tone of your voice. you use the formal (ud.) form of the verb. you use the informal (tú) form of the verb.