Which group of aluminum silicate minerals is the most abundant in Earth's crust?

Which ancient Roman arena could hold around 50,000 spectators? Which singer wanted to play himself in a 1946 film biography but was too old, so Larry Parks got the role? Which South American country is about 2,650 miles long but averages less than 110 miles wide? The Altiplano, Spanish for "high plain," is a plateau about 12,000 feet up in which South American mountains? Alvaro Uribe became president of which South American country in 2002, vowing to get tough on rebels and drug trafficke… Alvin York and Eddie Rickenbacker both received which French military decoration, first awarded in 1915? Complete the title of the 2008 romantic comedy about a perpetual bridesmaid: "___ Dresses." Which word means long-lasting or always recurring, like an illness or a liar?