Talk about what you’ve learn about Beijing 改错

Talk about what you’ve learn about Beijing 改错 what are you talk about 请问：What talk you about? What are you ( ) A.talk about So what you want to talk about? What ( ) you ( ) (talk) about?I am talking What t______ do you talk about? what are you parents talk about now What did you talk about?=We m______ talked about study about,learn about,write about,talk about的用法 Talk about what? What did the teacher talk about the film 改错