Agent tore around with anger. presenting a range of items (10)
I believe the answer is:
repertoire
'a range of items' is the definition.
(collection of items to be performed)
'agent tore around with anger' is the wordplay.
'agent' becomes 'rep' (short for representative).
'around' is an anagram indicator.
'with' says to put letters next to each other.
'anger' becomes 'ire' (ire is intense rage).
'tore' with letters rearranged gives 'erto'.
'rep'+'erto'+'ire'='REPERTOIRE'
'presenting' is the link.
(Other definitions for repertoire that I've seen before include "Pieces a performer knows and plays" , "Performer's set of pieces played" , "Complete range of a performer's prepared material" , "Range of works performed" , "The pieces a performer can play" .)