Answer:
1. Los viajeros compran los pasajes. Ellos compran los pasajes.
2. La agente de viajes confirma la reservación. Ella confirma la reservación.
3. El empleado tiene las llaves. Él tiene las llaves.
4. Yo escribo una carta. Yo escribo.
Explanation:
Identifying the narrator and the time that a sentence indicates is the first step that must be taken. this is very important to be able to logically conjugate the verbs, and that these have concordance with what is being expressed
My first language is spanish and I think the best answer would be "que te pasó?"
Answer:
water doesn't affect the titration as water does not react with the reagents or change the number of moles of acid added.
