I am working on my computer和I am working with my computer有什么

I am working on my computer和I am working with my computer有什么 I am doing my homework和i am working on my homework有什么区别? I'm working _ my computer,用in or on? I'm working on my computer.(变一般疑问句） My math teacher said I am hard-working. I am working是什么意思 To do well in the coming exam,I am working hard with my less 英语翻译[]being busy ,I am still working hard on my writing and make difference.Now,I am working on I am unhappy because my iPhone stops working同义句I am unhappy My computer is on the table(一般疑问句) I am a good student.（一般疑问 I am a computer.