She is really hard to understand, I agree.
"Tú" naturally goes with"usas". The conjugation itself tells you the noun.
You wouldn't normally need the noun because of the conjugation but in the listening exercises you have to type what you hear.
The more comfortable you get the better you're listening becomes.
Also remember these sentences are repeated often throughout the lesson. It will most likely be something you've just worked on.
Rosa, that's an English issue. Spanish doesn't make much of a difference between those forms.
You generally use the Simple Present ("Do you use?") when you're talking about a habitual event, i.e. you use that car on a regular basis. The Progressive Present ("Are you using?") is rather used if it's a one-time thing.