Looks at the pages being turned (5)
I believe the answer is:
gapes
'looks' is the definition.
(I know this)
'the pages being turned' is the wordplay.
'being turned' indicates an anagram.
'pages' anagrammed gives 'GAPES'.
'at' acts as a link.
(Other definitions for gapes that I've seen before include "Yawns" , "Opens mouth wide in surprise" , "Stares at with mouth wide open" , "Looks amazedly into pages" , "seems very surprised" .)