In ABBA's "Dancing Queen", the dancing queen is "young and sweet, only..." what age?

Which word means to abandon someone on a desert island and also names a dark red color? Complete the inscription over the gate of Hell in Dante's "Inferno": "Abandon all ___, ye who enter here". ABBA hit the U.S. top 40 in 1975 with which three-letter palindrome? Which ABBA-based musical passed "Hello, Dolly!" in number of Broadway performances in 2008? Abbey Theatre director Lady Augusta Gregory was the patron of which poet she met in 1896? Abbie Hoffman's "Yippies" took their name from which group? What is Abbott and Costello's most famous comedy routine? Which standard system of weight, based on a 16-ounce pound, is abbreviated "avdp"?