Have you ever been to Shanghai? Yes. I --Have you ever been to shangh...

--Have you ever been to Shanghai? ---Yes. I ________ there a few months ago. A have been ...

B \u65f6\u6001\u7684\u7528\u6cd5\u3002\u6839\u636e\u65f6\u95f4\u72b6\u8beda few months ago\u53ef\u77e5\uff0c\u662f\u4e00\u822c\u8fc7\u53bb\u65f6\uff0c\u6545\u7b54\u6848\u4e3aB\u3002

a few months ago\u662f\u8fc7\u53bb\u7684\u65f6\u95f4\u6240\u4ee5\u7528\u8fc7\u53bb\u5f0f \u5982\u679c\u662f\u4e00\u6bb5\u5ef6\u7eed\u6027\u7684\u65f6\u95f4\u5c31\u53ef\u4ee5\u7528A \u6bd4\u5982from then on

B
a few months ago 用于一般过去时。前面的问句已经被Yes回答，后面是句号，与Yes已经没有关系了。
很高兴为你解答！
老师祝你学习进步！
请及时采纳哦！多谢你的问题！^_^

went

a few month ago 要用一般过去时

【俊狼猎英】 团队为您解答，欢迎追问！

B
a few month ago 几个月之间，具体的时间时，要用过去式

选B。
问：“你去过上海吗？”
答：“是的，我几个月之前去过那。”
解析：a few month ago （几个月之前），是过去时间的标志，所以要用一般过去时。
希望可以帮到你~

选B。 因为 a few years ago 是一般现在时的标志！

B went

扩展阅读：have you ever句型 ... have ever been to ... have you ever gone ... have you ever thought ... journey to the west ... you can ever have ... have you ever wonder ... have you ever felt ... have you ever used ...