I don't know what to say at the meeting (用John代替句子主语)

I don't know what to say at the meeting (用John代替句子主语)
I don't know what to say at the meeting (用John代替句子主语)

I don't know what to say at the meeting (用John代替句子主语)
John does not know what to say at the meeting.
助动词与人称代词的搭配问题如下图：
人称代词IYou He / She / ItWe / You / They一般现在时dododoesdo一般过去时did

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John doesn't know what to say at the meeting

你好:
John doesn't know what to say at the meeting.