请问what do you think __ (talk) about at the meeting tommorrow?请问此处填什么?

问题描述:

请问what do you think __ (talk) about at the meeting tommorrow?请问此处填什么?

will be talked.此句中do you think作插入语,what是句子的主语,句子的意思是,你认为明天的会议将讨论什么,或说什么将被讨论.