The correct answer would be abrió.
Usted <u>abrió</u> la ventana.
You (formal) opened the window.
Hope this helps! :3
1. Yo quisiera
2. Pudieran
3. Fuéramos
Me comí una hamburguesa y además unas patatas
For example "adios amigo" that a word you dont know so in not on English that is sound weird is not an english word when is like "hi bro" that a inglish word
