I would like to know
I would like to know how much it costs.
Quisiera saber por qué a Tom no le gusta Mary.
I’d like to know why Tom doesn’t like Mary.
Solo quisiera saber qué hice mal.
I just wish I knew what I did wrong.
I’d like to know what happened.
I would like to know.
Quisiera saber el paradero de Tom.
I’d like to know Tom’s whereabouts.
Quisiera saber cómo llegó Tom ahí.
I’d like to know how Tom got there.
Quisiera saber por qué ha hecho eso.
I’d like to know why he/she did that.
Solo quisiera saber qué sabías y cuándo lo supiste.
I just wanted to know what you knew and when you found out.
Quisiera saber lo que tú piensas.
I'd like to know what you think.