Continue, persevere (5,2)
I believe the answer is:
carry on
I believe this is a double definition.
'continue' is the first definition.
(carry on can mean to continue or keep going)
'persevere' is the second definition.
(thesaurus)
(Other definitions for carry on that I've seen before include "Proceed" , "Have an affair - cause a fuss - continue" , "Continue like English series of risque films" , "play around" , "Improper behaviour" .)