I would have ......... all night if I could, but we all had to leave early because Carmen didn't feel good. (*) sing (*) sung (*) sang (*) singed
This is a companion discussion topic for the original entry at https://english.best/questions/1955,i-would-have-___-all-night-if-i-could-but-we-all-had-to-leave-early-because-carmen-didnt-feel-good/