B) grandes, interesantes y caros
They bought gifts (plural), so the adjectives need to be plural as well.
1) Sí, se la preparo.
2) Ella habla de un libro.
Answer:
First of all are you asking for the translations?
Explanation:
If so,
1.) Why do you not drink coffee, Thomas?
2.) Costa Rica, what is a beverage?
3.) Are the beverages in Costa Rica good or bad for your health?
4.) According to Thomas, how´s the food and the soda?
5.) At home, what is on the table?