<span>El señor Rodríguez
está leyendo el periódico
</span><span>Pepe y Martita
están jugando fútbol
son respuestas o que</span>
Para el almuerzo mi amigo come una hamburguesa con yogur.
Not hating on anyone that has hamburgers and yogurt, but most people don't do that.
El dia de navidad we open presents on christmas morning and have family dinner
Answer:
A stem is the part of the verb that comes before the ending (which, in infinitive verbs, is always either ar, er, or ir). In regular conjugations, the stem doesn't change, where in irregular conjugations, it can be completely different. In stem-changing verbs, the change is in the last vowel of the stem.
Explanation: