I am not sure.when shall we meet?合成一句

I am not sure.when shall we meet?合成一句 When shall we meet?I do not know(合为一句) I do not know ___ ___ I am not sure when I should go.(同义句)I am not sure when ____ He will come tomorrow.I am sure 合成一句 --I am not free_____half past six .Shall we meet at that tim I don't know when we shall meet again .(改为简单句） 英语翻译when shall we meet? When shall we meet tomorror? when shall we meet again? I am not sure同义句 I am not sure yet同义句 ------------when and where shall we meet?-----------i'll wai