题目内容：

I don't know who can I talk to for help同义句转换为什么?I don't know who to talk for help行吗
如果说who to talk to for help 我认为最好不要改变题意，不一定是问，也肯能为谈话 可是两个介词应该不可以吧

优质解答

who to talk to for help 为正确表达,此处的两个to都不可少.第一个to是不定式的to,第二个to是talk to 中的.