I have something important to
Tengo algo importante que decir.
I have something important to say.
Tengo algo importante que hacer.
I have something important to do.
Tengo algo importante que decirles.
I have something important to tell you.
Tengo algo importante que discutir con Ud.
I have something important to discuss with you.
Tengo algo importante que decirle.
I have something important to tell you.
Tengo algo importante que decirte.
I have something important to tell you.