根据短文内容和括号内所给汉语意思，写出空白处各单词的正确形式（每空一词）．

Pizza has a long history．The ancient Greeks（希腊人） first had the idea of putting （46）　　（蔬菜） on pieces of bread，and "Pizza ovens" have been found in Roman cities．But for centuries one important ingredient was （47）　　（找不到的，失踪的） the first tomatoes were not brought to Europe until the sixteenth century．from South America．It was the nineteenth century before Rafaela Esposito，a baker from Naples，began to sell the first （48）　　（现代的） pizzas．He was asked to bake a special pizza for a （49）　　（拜访） by the Italian King and Queen in 1889，and so the first pizzas Margarita was （50）　　（创造），named after the Queen．

Pizza became a favorite dish in Italy，but pizza really became an （51）　　（国际的） dish after the Second World War，when （52）　　（千） of American soldiers went home from Europe．（53）　　（不久） there were pizzerias all over the USA，and American chains（连锁店） like Pizza Hut （54）　　（传播） the idea around the world．Today the average American eats over ten kilograms of pizza a year，and the world's （55）　　（最大的） pizza was baked out not in Italy，but in Cuba!