He was also keenly interested in their finances.
Christianity Today
He was keenly interested in a number of charity organisations.
Times, Sunday Times
Finally, while awaiting word about his college applications, he becomes keenly interested in the chickens he feeds.
The Times Literary Supplement
If you are not keenly interested in its concerns, it won't knock you out.
Times, Sunday Times
He was keenly interested in science and wanted to popular-ise it through television.
Times, Sunday Times