5. which of the following would be best to drink while running a marathon? un bistec una gaseosa un batido agua 6. what is the best response to the following question? ? de donde eres? soy de los estadoes unidos estoy de los estados unidos ser de los estados unidos es de los estados unidos 7. how do you say "today is monday" in spanish? hoy ser lunes hoy esta lunes hoy es lunes hoy esta lunes 8. what is the correct way to say "it is [made] of fruit" in spanish? esta de frutas son de frutas estan de frutas es de frutas can someone me with spanish.

Answers:

If you are in a marathon, you need to be hydrated in order to have energy to keep running. Therefore, you need to ingest water (agua), not a steak (bistec), a soda (gaseosa), nor a smoothie (batido).

If the question is:

¿De donde eres? (Where are you from?)

You must answer with the same verbal tense (verb TO BE in present) and the correct subject pronoun. In this case is yo (I):

I am from the United States  

(Yo) Soy de los Estados Unidos

Note in Spanish grammar is not always necessary that the subject is explicitly in the sentence, it is called Tacit Subject, Implicit Subject or Null Subject.  

This is because the subject is encoded in the verb conjugation

This is the right way to translate the sentence above, taking into account it is in present tense with the verb TO BE applied to the 3rd person in singular.

In Spanish (castillian) the verb TO BE means ser or estar. In this sentence we are talking about the composition (ingredients) of a food, in other words, what is the food made of.