1) Acutely 2) Ardently 3) Avidly 4) Devotedly 5) Eagerly 6) Enthusiastically 7) Excitedly 8) Fervently 9) How to be aware 10) How you may be interested 11) Impatiently 12) In an acute way 13) In an astute manner 14) In an avid manner 15) One way to be aware 16) Passionately 17) Readily 18) Willingly 1) Avidly 2) Closely 3) Eagerly 4) Enthusiastically 5) Fervently 6) Freely 7) Hopefully 8) Passionately 9) Vigorously 
• (adv.) In a keen manner.
Keen'ly adverb In a keen manner. 
[adv] - in a keen and discriminating manner
adverb in a keen and discriminating manner; `he was keenly aware of his own shortcomings`