What are you doing 跟 What are you working on?

What are you doing 跟 What are you working on? 求歌名what are you working on? what are you doing. what you are doing what are you doing What are you doing? 英语翻译W:Hi,Jim.What are you doing?M:Oh,Hi,Linda.I’m working on What are you on? what are you doing和what you are doing区别 what are you doing to hello,what are you doing what are you doing here?