I don't know what to doI don't know what I do这两句话意思一样吗? 都是宾语从句?

I don't know what to doI don't know what I do这两句话意思一样吗? 都是宾语从句?
I don't know what to do
I don't know what I do这两句话意思一样吗? 都是宾语从句?

I don't know what to doI don't know what I do这两句话意思一样吗? 都是宾语从句?
没有I don't know what I do的说法,只有I don't know what I did 或者I don't know what I should do