写错了.应是what to do with it 怎样处理那件事.属于“连词+不定时”结构.通常,在句子中作主语,宾语或表语.例如：
What to do with it hasn't been decided.怎样处理那件事没有决定下来.
He doesn't know what to do with it .他不知道怎样处理那件事
The question is what to do with it 问题是怎样处理那件事