Attend wake (4,2)
I believe the answer is:
come to
I believe this clue is a double definition.
'attend' is the first definition.
(I've seen this before)
'wake' is the second definition.
(I've seen this before)
(Other definitions for come to that I've seen before include "Regain consciousness or arrive at" , "Reach" , "Regain consciousness - stop vessel" , "cost" , "Total" .)