Spanish language Q&A Forum

Can anyone explain why the following answer options are all punctuated with a semicolon?  Is this the correct use of a semicolon in Spanish?  In English, it would be a comma instead of a semicolon.

Hi! I had a similar issue to Nicole taking a test today. 

The question was:

¿A qué ________?What do you do?
I answered te dedicas and se dedica. It marked me incorrect for not choosing trabajas as well. But I thought it was "en que trabajas", not "a que". Is this an error w/ the quiz or am I not understanding something?
Thank you!

Some verbs in the preterite indefinido have tildes and some don't. Is there a rule for when they are used or not used, as i'm finding it difficult to remember when to use them?

Hello.  Can you please explain why the definite article isn't used in this phrase?  Is it similar to the difference between "en casa" (at home) and "en la casa" (in the house, as in a physical location)?  Thank you!

When, if ever, is the construction "no...nada" used? When is "nada" used?

Hi,

In this sentence: Vienes conmigo al cine? -________. Estoy cansada.

Why are both "no se" and "no lo se"correct, if it is expressing doubt?

Thanks