what i should do 和 what should i do 哪个是正确的?

问题描述:

what i should do 和 what should i do 哪个是正确的?

两个都对,但用处不同.
What should I do?正确,疑问句.
I cannot let you know what I should do.正确,从句.
I don't think you are the person to tell me what I should do.正确,从句.
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