I have been reading
He estado leyendo el libro toda la tarde.
I've been reading the book all afternoon.
He estado leyendo mucho sobre ti.
I've been reading a lot about you.
He estado leyendo acerca de tus líderes.
I've been reading about your leaders.
— Haz lo que debas (1989)
He estado leyendo por una hora.
I've been reading for an hour.
I've been reading this book.
I have been reading poetry.