"But I have ...to keep / And miles to go before I sleep" (Robert Frost) (8)
I believe the answer is:
promises
(Other definitions for promises that I've seen before include "''But I have ...to keep / And miles to go before I sleep'' (Robert Frost)" , "Pledges, vows" , "Undertakings, vows" , "Makes a commitment" , "Commitments, vows" .)