Collocations for curious - adj.

be, feel, seem
became, get, grow
remain
make sb
Her secretive manner had made me curious.

extremely, fairly, very, etc.
deeply, intensely
I was intensely curious to know more about him.

a little, slightly, etc.
mildly
genuinely
naturally
Puppies are naturally curious.

just, merely, simply
I'm just curious to know what you think.

intellectually

about
I was curious about how she would react.

as to
She was curious as to why he was there.

curious to find out, know, see, etc. sb/sth

be, feel, look, seem
find sb/sth

extremely, fairly, very, etc.
I find it very curious that you did not tell anyone.

a little, slightly, etc.
a slightly curious statement.

Curious is used with these nouns:
aspect, blend, coincidence, combination, elation, expression, eye, fashion, feeling, gaze, glance, habit, incident, look, mind, mix, mixture, omission, paradox, phenomenon, sensation, tale, thing, twist