Advance or continue (7)
I believe the answer is:
proceed
This clue is a double definition.
'advance' is the first definition.
(I've seen this before)
'continue' is the second definition.
(I know that continue can be written as proceed)
(Other definitions for proceed that I've seen before include "Go forward" , "Continue; advance" , "Continue, carry on" , "Continue, go ahead" , "Follow a certain course" .)