I do not know for sure when he will set off for Japan这句话的中文意思!

I do not know I do not know I do not know when we shall leave for Nanjing.I do not know _____ _____ leave for Nanjing. I do not understand do not know Thank you for your message 请问 I DO NOT KNOW sorry,i do not know! Why I do not know (1/2)－I have not heard from Henry for a long time.－What do you su 求翻译：Interpreting those who know me know I do not know who I want anything else for me I do not know how to do I love you ,Do not know if you can do for you,Thanks I do not know what to do for light in the evening I do not know when we shall leave for Nanjing.I do not know when ____leave for Nanjing.改简单句 I do not know what I should eat for lunch today.同义句 At this point,I really do not know what I feel for you I know you willleave!Do not forget me!What can I do for I know you willleave!Do not forget me!What can I do for you 的中文意思```` I do not know ,I think my tears will not fall for you翻译成中文是什么 I do not know how to express my feelings后面跟“for you 还是”to you?