初二英语题目,告急I don't know when we'll leave hereI don't know ____

初二英语题目,告急I don't know when we'll leave hereI don't know ____ I don't know when we should leave for Nanjing. I don't know when to leave I don't know when he ____ back tomorrow.Don't worry,I 'll ca I don't know when we will leave the city.(同义句） I don't know（ We don't know when we shall leave for Nanjing. I don't know when leave 还是I don't know when to leaf i don't know when i should leave 同意句 I don't know when we shall start.(改为简单句) I don't know ____ _ I don't know when I'll finish 英语翻译I don't know when( )for Shanghai.(leave) I don't know when Mr.Li ____ back.But I'll call you at once