"Can I buy you a ___?" (question you may hear at a pub)

First three letters of "The Alphabet Song"3 Rainbow shape3 ___ constrictor (large snake)3 British chart-topping band known for "Yellow," whose members became friends during orientation at University College, London8 Game show hosts (anagram of "cms"): Abbr.3 Pancake syrup5 "Hurray!" or "Ole!" in a stadium5 ___ Na Na, American rock and roll group3