A,has
has gone 构成【现在完成时】
语言点：
more than one + 名词单数 虽表复数概念,但习惯上接【单数谓语】
拓展：
Many a + 名词单数 “许多.” 做主语时,和more than one...一样,后接单数谓语
如：Many a student has seen the film.
= Many students have seen the film.(注意比较）
不懂的欢迎追问,