I don't think that is
I don't think that's wise.
No creo que eso sea una opción.
I don't think that's an option.
I don't think that's true.
I don't think that's possible.
I don't think that's fair.
No creo que eso sea un pequeño amigo.
I don't think that's a little friend.
No creo que eso sea necesario.
I don't think that's necessary.