Which 1931 standard became a 1968 hit for Cass Elliot of the Mamas & the Papas?

Which two national capitals lie on the Río de la Plata estuary? Which Caribbean island is an overseas department of France? In 1997, which teenage country star's version of "How Do I Live" spent a then-record 69 weeks on the Billboard Hot 100? Which Virginia college, chartered in 1693, is the second-oldest institution of higher education in the U.S.? Besides the echidna, which is Australia's other egg-laying mammal? Along with the Carolina Panthers, which NFL expansion team played its first games in 1995? Theodore Roosevelt and which other president both had a wife named Edith? A Sea Breeze cocktail mixes vodka with cranberry juice and which other juice?