absorbedly
advertently
ardently
assiduously
attentively
closely
continuously
determinedly
devotedly
devoutly
diligently
doggedly
eagerly
earnestly
engrossedly
fervently
fervidly
fixedly
heartily
heatedly
heedfully
impassionedly
intensely
interestedly
keenly
mindfully
observantly
passionately
perfervidly
preoccupiedly
raptly
regardfully
sedulously
seriously
sharply
sincerely
steadfastly
steadily
studiously
unflinchingly
unremittingly
vehemently
with attention
with interest
with rapt attention
Bentley
differently
gently
incidentally