Commend two pages in a range (7)
I believe the answer is:
approve
'commend' is the definition.
(thesaurus)
'two pages in a range' is the wordplay.
'two pages' means two substitutions for 'pages'.
'pages' becomes 'p'.
'pages' becomes 'p'.
'in' means one lot of letters goes inside another.
'range' becomes 'rove' ('rove' can be a synonym of 'range'**).
'p'+'p'='pp'
'a'+'rove'='arove'
'pp' put into 'arove' is 'APPROVE'.
(Other definitions for approve that I've seen before include "Commend, endorse" , "Authorize" , "Say yes to" , "Deem satisfactory" , "Think highly of - sanction" .)