I remember ____(visit)him in Beijing last month.

问题描述:

I remember ____(visit)him in Beijing last month.

visiting

visiting
remember doing表示记得做过某事

是visiting ,
remember和forget都有两种搭配,
一种是doing,表示以前做过了.另一种是to do,表示未做.
鉨根据题意,上个月去拜访他,明显是发生了的事情,所以选doing形式