1. I have to order a new cookbook today.
2. I have to go to a conference with some colleagues.
3. I should go see my patient with diabetes.
4. Today, Monday, I can see more patients.
Answer: Mi hermana estaba riendose en el colegio.
Translation: My sister was laughing at school.
<h2><em>Spymore</em></h2>
I'm thinking us only B because pretérito is used to describe actions completed at some point in the past. hope this helps
