As Spain began to colonize more and more countries those countries began to develop slang which then resulted in the slang being an everyday thing so then it became part of the language so thats why every spanish speaking country speaks differently.
Answer:
Andrés no<em><u> ha </u></em><em><u>llegado</u></em> todavía.
Answer : Nosotros entramos.
Primera persona plural presente de indicativo verbo entrar.
Hope this helps!
Spymore
