Answer:
hay muchas opciones y también depende del país en el que estés pero las mas comunes son:
adiós, chau, hasta luego, hasta pronto, nos vemos, etc.
Explanation:
Answer: Mis amigos y yo fuimos a comprar comida para enviar a una fiesta de cumpleaños que nuestro amigo tendrá más tarde. Compramos papas fritas, refrescos y helados.  estábamos pagando por el registro de alimentos y luego nos olvidamos y nos dimos cuenta de que olvidamos el pastel. rápidamente nos apresuramos a la panadería y compramos un pastel de aspecto genial. Luego pagamos y nos fuimos. 
It says in English: Me and my friends went to buy send food for a birthday party our friend is having later. We bought chips, soda, and ice cream. we were paying for the food register and then we forgot then we realized we forgot the cake! we quickly rushed over to the bakery and bought a cool looking cake. After we paid and left.
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Part 2
Answer: Marcos no <u>se seca</u> el pelo después de ducharse.
Explanation: in reflexive verbs the subject who performs the action is the same one who receives it. In this sentence the subject is "Marcos", who is a third singular person, so you you can say:
Translation: Marcos does not dry his hair after showering.
<h2><em>Spymore</em></h2>