i don't know i can't feel i'm so lonely是什么意思

I don't know. 同义句:I don't know what I can do .转换：I don't know what ( ) ( ). “i don't know you know i don't know I don't know how can I ask questions? I don't know.Do it how can i sorry,I don't know. i don`t know much I don't really know. 英语；I don't know I don't know miss I don't know him. I don't know now 翻译 i don't know So know,I don't I don't know her i don't know anything I don't know what can I do 还是 I don't konw what I can do I don't know how I can swim well.（改为简单句） I don't know ________ _______ _______well.I don't know how I can swim well.（改为简单句）I don't know ________ _______ _______well.