Answer:
ER and have Ir have the same ending In -.yo , tu , El/ellla/usted , ellos / ustedes except for nosotros and vosotros
Explanation: Verbs _. vender & Vivir
.vend-o viv-o
.vend-es viv-es
.vend-e viv-e
.vend-emos viv-imos -. endings aren't the same
.vend-en viv-en
but they are most likely to tell you to stem change the verb along with it