A“frase util” when asking someone to talk slow is:

perdoneme.

hable más rápido, por favor.

hable más despacio, por favor.

gracias.

The answer is b: estudiar (to study)

For this question, it will be important to use the words "mejor" (better), "lo mejor" (the best), and "lo peor" (the worst). while "mejor" is comparative (you are comparing one thing to something else), "lo mejor" and "lo peor" are superlative (there is nothing else better or worse than what these words are describing - there is no comparison).  you could say something like: la música rap es mejor que la música clásica - que es lo peor - pero la música rock es lo mejor de todas las formas de la música (rap music is better than classical music - which is the worst - but rock music is the best out of all the forms of music).

Ellos  están jugando  el tenis.

Write about selena's death or how different events are celebrated such as cinco  de mayo. those are some example for starters