完形填空。Pizzaispopular.It'susuallyroundandmadewithtomatosa...
问题详情：完形填空。Pizzaispopular.It'susuallyroundandmadewithtomatosauceandcheese.Pizzamayhavebegunas__1_foodforthepoorinItaly.Theytookflatbreadandtoppeditwitholiveoil，tomatoes，andcheese.In1889，apizzawas...