Answer:
Yo vivo
Ustedes escriben
Step-by-step explanation:
Since no tense is asked for we can use present tense. Both vivir and escribir are regular verbs ending in -ir, they have the same terminations based on verse and number. An example can be the verb "vivir" (to live). The bold letters are the terminations to conjugate any regular ver ending in -ir.
yo vivo
tú vives
él vive
nosotros vivimos
ustedes escriben
ellos viven